279216113 has 8 divisors (see below), whose sum is σ = 317843136. Its totient is φ = 242796400.

The previous prime is 279216083. The next prime is 279216121. The reversal of 279216113 is 311612972.

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

It is a de Polignac number, because none of the positive numbers 2^k-279216113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 279216113.

It is not an unprimeable number, because it can be changed into a prime (279216173) 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, 551558 + ... + 552063.

It is an arithmetic number, because the mean of its divisors is an integer number (39730392).

Almost surely, 2^279216113 is an apocalyptic number.

279216113 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

279216113 is a deficient number, since it is larger than the sum of its proper divisors (38627023).

279216113 is a wasteful number, since it uses less digits than its factorization.

279216113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103655.

The product of its digits is 4536, while the sum is 32.

The square root of 279216113 is about 16709.7610096614. The cubic root of 279216113 is about 653.6021803845.

The spelling of 279216113 in words is "two hundred seventy-nine million, two hundred sixteen thousand, one hundred thirteen".