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13793797 = 113122069
BaseRepresentation
bin110100100111…
…101000000101
3221221210112101
4310213220011
512012400142
61211352101
7225150103
oct64475005
927853471
1013793797
117871536
124752631
132b1c614
141b90c73
1513270b7
hexd27a05

13793797 has 4 divisors (see below), whose sum is σ = 13915980. Its totient is φ = 13671616.

The previous prime is 13793789. The next prime is 13793803. The reversal of 13793797 is 79739731.

It is a Cunningham number, because it is equal to 37142+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79739731 = 181440551.

It can be written as a sum of positive squares in 2 ways, for example, as 244036 + 13549761 = 494^2 + 3681^2 .

It is a cyclic number.

It is not a de Polignac number, because 13793797 - 23 = 13793789 is a prime.

It is a super-3 number, since 3×137937973 (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13793707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60922 + ... + 61147.

It is an arithmetic number, because the mean of its divisors is an integer number (3478995).

Almost surely, 213793797 is an apocalyptic number.

It is an amenable number.

13793797 is a deficient number, since it is larger than the sum of its proper divisors (122183).

13793797 is a wasteful number, since it uses less digits than its factorization.

13793797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122182.

The product of its digits is 250047, while the sum is 46.

The square root of 13793797 is about 3714.0001346257. Note that the first 3 decimals coincide. The cubic root of 13793797 is about 239.8250866735.

The spelling of 13793797 in words is "thirteen million, seven hundred ninety-three thousand, seven hundred ninety-seven".

Divisors: 1 113 122069 13793797