79200081 has 6 divisors (see below), whose sum is σ = 114400130. Its totient is φ = 52800048.

The previous prime is 79200049. The next prime is 79200101. The reversal of 79200081 is 18000297.

It can be written as a sum of positive squares in only one way, i.e., 42185025 + 37015056 = 6495^2 + 6084^2 .

It is not a de Polignac number, because 79200081 - 2⁵ = 79200049 is a prime.

It is a super-2 number, since 2×79200081² = 12545305660813122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (79200001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4399996 + ... + 4400013.

Almost surely, 2^79200081 is an apocalyptic number.

It is an amenable number.

79200081 is a deficient number, since it is larger than the sum of its proper divisors (35200049).

79200081 is a wasteful number, since it uses less digits than its factorization.

79200081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8800015 (or 8800012 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 79200081 is about 8899.4427353627. The cubic root of 79200081 is about 429.4459802057.

The spelling of 79200081 in words is "seventy-nine million, two hundred thousand, eighty-one".