12765979 has 4 divisors (see below), whose sum is σ = 12956584. Its totient is φ = 12575376.

The previous prime is 12765959. The next prime is 12766001. The reversal of 12765979 is 97956721.

It is a happy number.

12765979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97956721 = 2381 ⋅41141.

It is a cyclic number.

It is not a de Polignac number, because 12765979 - 2⁵ = 12765947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12765919) 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, 95202 + ... + 95335.

It is an arithmetic number, because the mean of its divisors is an integer number (3239146).

Almost surely, 2^12765979 is an apocalyptic number.

12765979 is a deficient number, since it is larger than the sum of its proper divisors (190605).

12765979 is an equidigital number, since it uses as much as digits as its factorization.

12765979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190604.

The product of its digits is 238140, while the sum is 46.

The square root of 12765979 is about 3572.9510212148. The cubic root of 12765979 is about 233.7139893243.

The spelling of 12765979 in words is "twelve million, seven hundred sixty-five thousand, nine hundred seventy-nine".