13089988 has 12 divisors (see below), whose sum is σ = 23466492. Its totient is φ = 6385280.

The previous prime is 13089977. The next prime is 13089997. The reversal of 13089988 is 88998031.

It can be written as a sum of positive squares in 2 ways, for example, as 643204 + 12446784 = 802^2 + 3528^2 .

It is a congruent number.

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, 39745 + ... + 40072.

It is an arithmetic number, because the mean of its divisors is an integer number (1955541).

Almost surely, 2^13089988 is an apocalyptic number.

It is an amenable number.

13089988 is a deficient number, since it is larger than the sum of its proper divisors (10376504).

13089988 is a wasteful number, since it uses less digits than its factorization.

13089988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79862 (or 79860 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 46.

The square root of 13089988 is about 3618.0088446548. The cubic root of 13089988 is about 235.6747650564.

The spelling of 13089988 in words is "thirteen million, eighty-nine thousand, nine hundred eighty-eight".