12905930879 has 4 divisors (see below), whose sum is σ = 12906242400. Its totient is φ = 12905619360.

The previous prime is 12905930777. The next prime is 12905930963. The reversal of 12905930879 is 97803950921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12905930879 - 2⁸ = 12905930623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12905930879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12905530879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81962 + ... + 180359.

It is an arithmetic number, because the mean of its divisors is an integer number (3226560600).

Almost surely, 2^12905930879 is an apocalyptic number.

12905930879 is a deficient number, since it is larger than the sum of its proper divisors (311521).

12905930879 is an equidigital number, since it uses as much as digits as its factorization.

12905930879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311520.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The spelling of 12905930879 in words is "twelve billion, nine hundred five million, nine hundred thirty thousand, eight hundred seventy-nine".