79709285 has 8 divisors (see below), whose sum is σ = 98236536. Its totient is φ = 62043840.

The previous prime is 79709257. The next prime is 79709291. The reversal of 79709285 is 58290797.

It can be written as a sum of positive squares in 4 ways, for example, as 6880129 + 72829156 = 2623^2 + 8534^2 .

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

It is not a de Polignac number, because 79709285 - 2⁶ = 79709221 is a prime.

It is a super-2 number, since 2×79709285² = 12707140230422450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215246 + ... + 215615.

It is an arithmetic number, because the mean of its divisors is an integer number (12279567).

Almost surely, 2^79709285 is an apocalyptic number.

It is an amenable number.

79709285 is a deficient number, since it is larger than the sum of its proper divisors (18527251).

79709285 is a wasteful number, since it uses less digits than its factorization.

79709285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430903.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 79709285 is about 8928.0056563602. The cubic root of 79709285 is about 430.3643657619.

The spelling of 79709285 in words is "seventy-nine million, seven hundred nine thousand, two hundred eighty-five".