13739904 has 48 divisors (see below), whose sum is σ = 39541320. Its totient is φ = 4579584.

The previous prime is 13739897. The next prime is 13739923. The reversal of 13739904 is 40993731.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4812 + ... + 7115.

Almost surely, 2^13739904 is an apocalyptic number.

It is an amenable number.

13739904 is an abundant number, since it is smaller than the sum of its proper divisors (25801416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13739904 is a wasteful number, since it uses less digits than its factorization.

13739904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11947 (or 11932 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 13739904 is about 3706.7376492004. The cubic root of 13739904 is about 239.5123431327.

The spelling of 13739904 in words is "thirteen million, seven hundred thirty-nine thousand, nine hundred four".