13904807 has 4 divisors (see below), whose sum is σ = 15891216. Its totient is φ = 11918400.

The previous prime is 13904797. The next prime is 13904831. The reversal of 13904807 is 70840931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13904807 - 2⁴ = 13904791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13904837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 993194 + ... + 993207.

It is an arithmetic number, because the mean of its divisors is an integer number (3972804).

Almost surely, 2^13904807 is an apocalyptic number.

13904807 is a deficient number, since it is larger than the sum of its proper divisors (1986409).

13904807 is an equidigital number, since it uses as much as digits as its factorization.

13904807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986408.

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

The square root of 13904807 is about 3728.9149896451. The cubic root of 13904807 is about 240.4667248797.

The spelling of 13904807 in words is "thirteen million, nine hundred four thousand, eight hundred seven".