13903144 has 16 divisors (see below), whose sum is σ = 27602100. Its totient is φ = 6542592.

The previous prime is 13903139. The next prime is 13903163. The reversal of 13903144 is 44130931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13322500 + 580644 = 3650^2 + 762^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50979 + ... + 51250.

Almost surely, 2^13903144 is an apocalyptic number.

It is an amenable number.

13903144 is a deficient number, since it is larger than the sum of its proper divisors (13698956).

13903144 is a wasteful number, since it uses less digits than its factorization.

13903144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102252 (or 102248 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 13903144 is about 3728.6919958613. The cubic root of 13903144 is about 240.4571379767.

The spelling of 13903144 in words is "thirteen million, nine hundred three thousand, one hundred forty-four".