79811275 has 6 divisors (see below), whose sum is σ = 98966012. Its totient is φ = 63849000.

The previous prime is 79811273. The next prime is 79811279. The reversal of 79811275 is 57211897.

It is not a de Polignac number, because 79811275 - 2¹ = 79811273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79811273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1596201 + ... + 1596250.

Almost surely, 2^79811275 is an apocalyptic number.

79811275 is a deficient number, since it is larger than the sum of its proper divisors (19154737).

79811275 is a wasteful number, since it uses less digits than its factorization.

79811275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3192461 (or 3192456 counting only the distinct ones).

The product of its digits is 35280, while the sum is 40.

The square root of 79811275 is about 8933.7156323671. The cubic root of 79811275 is about 430.5478414774.

The spelling of 79811275 in words is "seventy-nine million, eight hundred eleven thousand, two hundred seventy-five".