279983117 has 4 divisors (see below), whose sum is σ = 292156320. Its totient is φ = 267809916.

The previous prime is 279983111. The next prime is 279983129. The reversal of 279983117 is 711389972.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 279983117 - 2⁴ = 279983101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (279983111) 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, 6086567 + ... + 6086612.

It is an arithmetic number, because the mean of its divisors is an integer number (73039080).

Almost surely, 2^279983117 is an apocalyptic number.

It is an amenable number.

279983117 is a deficient number, since it is larger than the sum of its proper divisors (12173203).

279983117 is a wasteful number, since it uses less digits than its factorization.

279983117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12173202.

The product of its digits is 190512, while the sum is 47.

The square root of 279983117 is about 16732.6960469615. The cubic root of 279983117 is about 654.2001128657.

The spelling of 279983117 in words is "two hundred seventy-nine million, nine hundred eighty-three thousand, one hundred seventeen".