13051989 has 8 divisors (see below), whose sum is σ = 19336320. Its totient is φ = 8701308.

The previous prime is 13051979. The next prime is 13051991. The reversal of 13051989 is 98915031.

It is a happy number.

13051989 is a `hidden beast` number, since 130 + 519 + 8 + 9 = 666.

It is not a de Polignac number, because 13051989 - 2¹² = 13047893 is a prime.

It is a super-2 number, since 2×13051989² = 340708833712242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13051949) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 241677 + ... + 241730.

It is an arithmetic number, because the mean of its divisors is an integer number (2417040).

Almost surely, 2^13051989 is an apocalyptic number.

It is an amenable number.

13051989 is a deficient number, since it is larger than the sum of its proper divisors (6284331).

13051989 is an equidigital number, since it uses as much as digits as its factorization.

13051989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483416 (or 483410 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 13051989 is about 3612.7536589145. The cubic root of 13051989 is about 235.4464968317.

The spelling of 13051989 in words is "thirteen million, fifty-one thousand, nine hundred eighty-nine".