13908388 has 12 divisors (see below), whose sum is σ = 26212060. Its totient is φ = 6419232.

The previous prime is 13908383. The next prime is 13908409. The reversal of 13908388 is 88380931.

It can be written as a sum of positive squares in 2 ways, for example, as 2334784 + 11573604 = 1528^2 + 3402^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 13908388.

It is not an unprimeable number, because it can be changed into a prime (13908383) by changing a digit.

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, 133683 + ... + 133786.

Almost surely, 2^13908388 is an apocalyptic number.

It is an amenable number.

13908388 is a deficient number, since it is larger than the sum of its proper divisors (12303672).

13908388 is a wasteful number, since it uses less digits than its factorization.

13908388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267486 (or 267484 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 13908388 is about 3729.3951252180. The cubic root of 13908388 is about 240.4873661210.

The spelling of 13908388 in words is "thirteen million, nine hundred eight thousand, three hundred eighty-eight".