13987492 has 12 divisors (see below), whose sum is σ = 24773616. Its totient is φ = 6909320.

The previous prime is 13987489. The next prime is 13987531. The reversal of 13987492 is 29478931.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20734 + ... + 21397.

It is an arithmetic number, because the mean of its divisors is an integer number (2064468).

Almost surely, 2^13987492 is an apocalyptic number.

It is an amenable number.

13987492 is a deficient number, since it is larger than the sum of its proper divisors (10786124).

13987492 is a wasteful number, since it uses less digits than its factorization.

13987492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42218 (or 42216 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 13987492 is about 3739.9855614695. The cubic root of 13987492 is about 240.9424286992.

The spelling of 13987492 in words is "thirteen million, nine hundred eighty-seven thousand, four hundred ninety-two".