12479139 has 12 divisors (see below), whose sum is σ = 19085976. Its totient is φ = 7829952.

The previous prime is 12479123. The next prime is 12479167. The reversal of 12479139 is 93197421.

It is not a de Polignac number, because 12479139 - 2⁴ = 12479123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12479189) 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, 40629 + ... + 40934.

It is an arithmetic number, because the mean of its divisors is an integer number (1590498).

Almost surely, 2^12479139 is an apocalyptic number.

12479139 is a deficient number, since it is larger than the sum of its proper divisors (6606837).

12479139 is a wasteful number, since it uses less digits than its factorization.

12479139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81586 (or 81583 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 12479139 is about 3532.5824831135. The cubic root of 12479139 is about 231.9502655479.

The spelling of 12479139 in words is "twelve million, four hundred seventy-nine thousand, one hundred thirty-nine".