83397279 has 8 divisors (see below), whose sum is σ = 127081600. Its totient is φ = 47655576.

The previous prime is 83397247. The next prime is 83397319. The reversal of 83397279 is 97279338.

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

It is not a de Polignac number, because 83397279 - 2⁵ = 83397247 is a prime.

It is a super-2 number, since 2×83397279² = 13910212289207682, 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 (83397079) 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, 1985629 + ... + 1985670.

It is an arithmetic number, because the mean of its divisors is an integer number (15885200).

Almost surely, 2^83397279 is an apocalyptic number.

83397279 is a deficient number, since it is larger than the sum of its proper divisors (43684321).

83397279 is a wasteful number, since it uses less digits than its factorization.

83397279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3971309.

The product of its digits is 571536, while the sum is 48.

The square root of 83397279 is about 9132.2110685200. The cubic root of 83397279 is about 436.9019271738.

The spelling of 83397279 in words is "eighty-three million, three hundred ninety-seven thousand, two hundred seventy-nine".