12992889 has 36 divisors (see below), whose sum is σ = 21863376. Its totient is φ = 6840288.

The previous prime is 12992867. The next prime is 12992933. The reversal of 12992889 is 98829921.

It is not a de Polignac number, because 12992889 - 2⁵ = 12992857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12992839) 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 35 ways as a sum of consecutive naturals, for example, 24582 + ... + 25104.

It is an arithmetic number, because the mean of its divisors is an integer number (607316).

Almost surely, 2^12992889 is an apocalyptic number.

It is an amenable number.

12992889 is a deficient number, since it is larger than the sum of its proper divisors (8870487).

12992889 is a wasteful number, since it uses less digits than its factorization.

12992889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566 (or 546 counting only the distinct ones).

The product of its digits is 186624, while the sum is 48.

The square root of 12992889 is about 3604.5650223016. The cubic root of 12992889 is about 235.0905882834.

The spelling of 12992889 in words is "twelve million, nine hundred ninety-two thousand, eight hundred eighty-nine".