15113989 has 6 divisors (see below), whose sum is σ = 16613030. Its totient is φ = 13739880.

The previous prime is 15113981. The next prime is 15113999. The reversal of 15113989 is 98931151.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9150625 + 5963364 = 3025^2 + 2442^2 .

It is not a de Polignac number, because 15113989 - 2³ = 15113981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15113981) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 62334 + ... + 62575.

Almost surely, 2^15113989 is an apocalyptic number.

It is an amenable number.

15113989 is a deficient number, since it is larger than the sum of its proper divisors (1499041).

15113989 is a wasteful number, since it uses less digits than its factorization.

15113989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124931 (or 124920 counting only the distinct ones).

The product of its digits is 9720, while the sum is 37.

The square root of 15113989 is about 3887.6714110120. The cubic root of 15113989 is about 247.2443450659.

The spelling of 15113989 in words is "fifteen million, one hundred thirteen thousand, nine hundred eighty-nine".