13809704 has 16 divisors (see below), whose sum is σ = 25943220. Its totient is φ = 6891520.

The previous prime is 13809673. The next prime is 13809707. The reversal of 13809704 is 40790831.

It can be written as a sum of positive squares in 2 ways, for example, as 13322500 + 487204 = 3650^2 + 698^2 .

It is not an unprimeable number, because it can be changed into a prime (13809707) 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, 3782 + ... + 6474.

Almost surely, 2^13809704 is an apocalyptic number.

It is an amenable number.

13809704 is a deficient number, since it is larger than the sum of its proper divisors (12133516).

13809704 is a wasteful number, since it uses less digits than its factorization.

13809704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3340 (or 3336 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 13809704 is about 3716.1410091653. The cubic root of 13809704 is about 239.9172399834.

The spelling of 13809704 in words is "thirteen million, eight hundred nine thousand, seven hundred four".