15795979 has 4 divisors (see below), whose sum is σ = 15986376. Its totient is φ = 15605584.

The previous prime is 15795943. The next prime is 15796013. The reversal of 15795979 is 97959751.

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: 97959751 = 379 ⋅258469.

It is a cyclic number.

It is not a de Polignac number, because 15795979 - 2⁷ = 15795851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15795919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95074 + ... + 95239.

It is an arithmetic number, because the mean of its divisors is an integer number (3996594).

Almost surely, 2^15795979 is an apocalyptic number.

15795979 is a deficient number, since it is larger than the sum of its proper divisors (190397).

15795979 is an equidigital number, since it uses as much as digits as its factorization.

15795979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190396.

The product of its digits is 893025, while the sum is 52.

The square root of 15795979 is about 3974.4155545187. The cubic root of 15795979 is about 250.9085819153.

The spelling of 15795979 in words is "fifteen million, seven hundred ninety-five thousand, nine hundred seventy-nine".