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13938297 = 34646099
BaseRepresentation
bin110101001010…
…111001111001
3222020010202020
4311022321321
512032011142
61214425053
7226321302
oct65127171
928203666
1013938297
11796005a
124802189
132b70319
141bcb7a9
151354cec
hexd4ae79

13938297 has 4 divisors (see below), whose sum is σ = 18584400. Its totient is φ = 9292196.

The previous prime is 13938289. The next prime is 13938329. The reversal of 13938297 is 79283931.

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 13938297 - 23 = 13938289 is a prime.

It is a super-2 number, since 2×139382972 = 388552246520418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13938227) 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, 2323047 + ... + 2323052.

It is an arithmetic number, because the mean of its divisors is an integer number (4646100).

Almost surely, 213938297 is an apocalyptic number.

It is an amenable number.

13938297 is a deficient number, since it is larger than the sum of its proper divisors (4646103).

13938297 is an equidigital number, since it uses as much as digits as its factorization.

13938297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4646102.

The product of its digits is 81648, while the sum is 42.

The square root of 13938297 is about 3733.4028713762. The cubic root of 13938297 is about 240.6596263657.

The spelling of 13938297 in words is "thirteen million, nine hundred thirty-eight thousand, two hundred ninety-seven".

Divisors: 1 3 4646099 13938297