13919144 has 16 divisors (see below), whose sum is σ = 26654400. Its totient is φ = 6811312.

The previous prime is 13919137. The next prime is 13919161. The reversal of 13919144 is 44191931.

It is a self number, because there is not a number n which added to its sum of digits gives 13919144.

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, 18134 + ... + 18885.

It is an arithmetic number, because the mean of its divisors is an integer number (1665900).

Almost surely, 2^13919144 is an apocalyptic number.

It is an amenable number.

13919144 is a deficient number, since it is larger than the sum of its proper divisors (12735256).

13919144 is a wasteful number, since it uses less digits than its factorization.

13919144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37072 (or 37068 counting only the distinct ones).

The product of its digits is 3888, while the sum is 32.

The square root of 13919144 is about 3730.8369034306. The cubic root of 13919144 is about 240.5493434831.

The spelling of 13919144 in words is "thirteen million, nine hundred nineteen thousand, one hundred forty-four".