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13769797 = 31444187
BaseRepresentation
bin110100100001…
…110001000101
3221220120121111
4310201301011
512011113142
61211045021
7225020116
oct64416105
927816544
1013769797
1178554a8
124740771
132b11712
141b8620d
15131ee17
hexd21c45

13769797 has 4 divisors (see below), whose sum is σ = 14214016. Its totient is φ = 13325580.

The previous prime is 13769759. The next prime is 13769827. The reversal of 13769797 is 79796731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13769797 - 219 = 13245509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13769797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13769297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222063 + ... + 222124.

It is an arithmetic number, because the mean of its divisors is an integer number (3553504).

Almost surely, 213769797 is an apocalyptic number.

It is an amenable number.

13769797 is a deficient number, since it is larger than the sum of its proper divisors (444219).

13769797 is an equidigital number, since it uses as much as digits as its factorization.

13769797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444218.

The product of its digits is 500094, while the sum is 49.

The square root of 13769797 is about 3710.7677103263. The cubic root of 13769797 is about 239.6859143700.

The spelling of 13769797 in words is "thirteen million, seven hundred sixty-nine thousand, seven hundred ninety-seven".

Divisors: 1 31 444187 13769797