12862979 has 4 divisors (see below), whose sum is σ = 13306560. Its totient is φ = 12419400.

The previous prime is 12862963. The next prime is 12863023. The reversal of 12862979 is 97926821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97926821 = 71 ⋅1379251.

It is a cyclic number.

It is not a de Polignac number, because 12862979 - 2⁴ = 12862963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12862679) 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, 221747 + ... + 221804.

It is an arithmetic number, because the mean of its divisors is an integer number (3326640).

Almost surely, 2^12862979 is an apocalyptic number.

12862979 is a deficient number, since it is larger than the sum of its proper divisors (443581).

12862979 is an equidigital number, since it uses as much as digits as its factorization.

12862979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443580.

The product of its digits is 108864, while the sum is 44.

The square root of 12862979 is about 3586.4995469120. The cubic root of 12862979 is about 234.3044409587.

The spelling of 12862979 in words is "twelve million, eight hundred sixty-two thousand, nine hundred seventy-nine".