12990879 has 12 divisors (see below), whose sum is σ = 20470632. Its totient is φ = 7873200.

The previous prime is 12990871. The next prime is 12990899. The reversal of 12990879 is 97809921.

It is not a de Polignac number, because 12990879 - 2³ = 12990871 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12990871) 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, 65512 + ... + 65709.

It is an arithmetic number, because the mean of its divisors is an integer number (1705886).

Almost surely, 2^12990879 is an apocalyptic number.

12990879 is a deficient number, since it is larger than the sum of its proper divisors (7479753).

12990879 is a wasteful number, since it uses less digits than its factorization.

12990879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131238 (or 131235 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 12990879 is about 3604.2861984032. The cubic root of 12990879 is about 235.0784648198.

The spelling of 12990879 in words is "twelve million, nine hundred ninety thousand, eight hundred seventy-nine".