12979538 has 24 divisors (see below), whose sum is σ = 23005296. Its totient is φ = 5444400.

The previous prime is 12979531. The next prime is 12979543. The reversal of 12979538 is 83597921.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12979531) 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, 1973 + ... + 5463.

It is an arithmetic number, because the mean of its divisors is an integer number (958554).

Almost surely, 2^12979538 is an apocalyptic number.

12979538 is a deficient number, since it is larger than the sum of its proper divisors (10025758).

12979538 is a wasteful number, since it uses less digits than its factorization.

12979538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530 (or 3517 counting only the distinct ones).

The product of its digits is 136080, while the sum is 44.

The square root of 12979538 is about 3602.7125891472. The cubic root of 12979538 is about 235.0100372957.

The spelling of 12979538 in words is "twelve million, nine hundred seventy-nine thousand, five hundred thirty-eight".