12879919 has 8 divisors (see below), whose sum is σ = 14193872. Its totient is φ = 11612160.

The previous prime is 12879913. The next prime is 12879941. The reversal of 12879919 is 91997821.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12879919 - 2⁵ = 12879887 is a prime.

It is a super-2 number, since 2×12879919² = 331784626893122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12879913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10962 + ... + 12079.

It is an arithmetic number, because the mean of its divisors is an integer number (1774234).

Almost surely, 2^12879919 is an apocalyptic number.

12879919 is a deficient number, since it is larger than the sum of its proper divisors (1313953).

12879919 is a wasteful number, since it uses less digits than its factorization.

12879919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23097.

The product of its digits is 81648, while the sum is 46.

The square root of 12879919 is about 3588.8604040837. The cubic root of 12879919 is about 234.4072521897.

The spelling of 12879919 in words is "twelve million, eight hundred seventy-nine thousand, nine hundred nineteen".