13191489 has 12 divisors (see below), whose sum is σ = 19883136. Its totient is φ = 8411832.

The previous prime is 13191469. The next prime is 13191527. The reversal of 13191489 is 98419131.

It is not a de Polignac number, because 13191489 - 2⁵ = 13191457 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13191419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31657 + ... + 32070.

It is an arithmetic number, because the mean of its divisors is an integer number (1656928).

Almost surely, 2^13191489 is an apocalyptic number.

It is an amenable number.

13191489 is a deficient number, since it is larger than the sum of its proper divisors (6691647).

13191489 is a wasteful number, since it uses less digits than its factorization.

13191489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63756 (or 63753 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 13191489 is about 3632.0089482269. The cubic root of 13191489 is about 236.2823454495.

The spelling of 13191489 in words is "thirteen million, one hundred ninety-one thousand, four hundred eighty-nine".