13990404 has 24 divisors (see below), whose sum is σ = 33133408. Its totient is φ = 4593600.

The previous prime is 13990399. The next prime is 13990409. The reversal of 13990404 is 40409931.

It is an interprime number because it is at equal distance from previous prime (13990399) and next prime (13990409).

It is not an unprimeable number, because it can be changed into a prime (13990409) 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 7 ways as a sum of consecutive naturals, for example, 7897 + ... + 9504.

Almost surely, 2^13990404 is an apocalyptic number.

It is an amenable number.

13990404 is an abundant number, since it is smaller than the sum of its proper divisors (19143004).

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

13990404 is a wasteful number, since it uses less digits than its factorization.

13990404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17475 (or 17473 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 13990404 is about 3740.3748475253. The cubic root of 13990404 is about 240.9591478192.

The spelling of 13990404 in words is "thirteen million, nine hundred ninety thousand, four hundred four".