13904007 has 16 divisors (see below), whose sum is σ = 20431488. Its totient is φ = 8356320.

The previous prime is 13904003. The next prime is 13904017. The reversal of 13904007 is 70040931.

13904007 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13904007 - 2² = 13904003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13904003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2469 + ... + 5822.

It is an arithmetic number, because the mean of its divisors is an integer number (1276968).

Almost surely, 2^13904007 is an apocalyptic number.

13904007 is a deficient number, since it is larger than the sum of its proper divisors (6527481).

13904007 is a wasteful number, since it uses less digits than its factorization.

13904007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8350.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 13904007 is about 3728.8077182928. The cubic root of 13904007 is about 240.4621131156.

Adding to 13904007 its reverse (70040931), we get a palindrome (83944938).

The spelling of 13904007 in words is "thirteen million, nine hundred four thousand, seven".