13904188 has 12 divisors (see below), whose sum is σ = 24412752. Its totient is φ = 6929120.

The previous prime is 13904173. The next prime is 13904201. The reversal of 13904188 is 88140931.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4345 + ... + 6832.

It is an arithmetic number, because the mean of its divisors is an integer number (2034396).

Almost surely, 2^13904188 is an apocalyptic number.

It is an amenable number.

13904188 is a deficient number, since it is larger than the sum of its proper divisors (10508564).

13904188 is a wasteful number, since it uses less digits than its factorization.

13904188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11492 (or 11490 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 13904188 is about 3728.8319887064. The cubic root of 13904188 is about 240.4631565427.

It can be divided in two parts, 139041 and 88, that added together give a square (139129 = 373²).

The spelling of 13904188 in words is "thirteen million, nine hundred four thousand, one hundred eighty-eight".