13023989 has 16 divisors (see below), whose sum is σ = 15158016. Its totient is φ = 11059200.

The previous prime is 13023979. The next prime is 13023991. The reversal of 13023989 is 98932031.

It is a cyclic number.

It is not a de Polignac number, because 13023989 - 2⁴ = 13023973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13023919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47924 + ... + 48194.

It is an arithmetic number, because the mean of its divisors is an integer number (947376).

Almost surely, 2^13023989 is an apocalyptic number.

It is an amenable number.

13023989 is a deficient number, since it is larger than the sum of its proper divisors (2134027).

13023989 is a wasteful number, since it uses less digits than its factorization.

13023989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 13023989 is about 3608.8764179451. The cubic root of 13023989 is about 235.2780110997.

The spelling of 13023989 in words is "thirteen million, twenty-three thousand, nine hundred eighty-nine".