79993017 has 12 divisors (see below), whose sum is σ = 124433764. Its totient is φ = 49226400.

The previous prime is 79993003. The next prime is 79993019. The reversal of 79993017 is 71039997.

It can be written as a sum of positive squares in 2 ways, for example, as 3884841 + 76108176 = 1971^2 + 8724^2 .

It is not a de Polignac number, because 79993017 - 2¹⁸ = 79730873 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79993019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 341734 + ... + 341967.

Almost surely, 2^79993017 is an apocalyptic number.

It is an amenable number.

79993017 is a deficient number, since it is larger than the sum of its proper divisors (44440747).

79993017 is a wasteful number, since it uses less digits than its factorization.

79993017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683720 (or 683717 counting only the distinct ones).

The product of its (nonzero) digits is 107163, while the sum is 45.

The square root of 79993017 is about 8943.8815399132. The cubic root of 79993017 is about 430.8744006271.

The spelling of 79993017 in words is "seventy-nine million, nine hundred ninety-three thousand, seventeen".