13044987 has 6 divisors (see below), whose sum is σ = 18842772. Its totient is φ = 8696652.

The previous prime is 13044961. The next prime is 13044989. The reversal of 13044987 is 78944031.

It is a happy number.

13044987 is a `hidden beast` number, since 130 + 449 + 87 = 666.

It is not a de Polignac number, because 13044987 - 2⁶ = 13044923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13044989) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 724713 + ... + 724730.

It is an arithmetic number, because the mean of its divisors is an integer number (3140462).

Almost surely, 2^13044987 is an apocalyptic number.

13044987 is a deficient number, since it is larger than the sum of its proper divisors (5797785).

13044987 is a wasteful number, since it uses less digits than its factorization.

13044987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449449 (or 1449446 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 13044987 is about 3611.7844620077. The cubic root of 13044987 is about 235.4043859763.

The spelling of 13044987 in words is "thirteen million, forty-four thousand, nine hundred eighty-seven".