79827957 has 16 divisors (see below), whose sum is σ = 129015360. Its totient is φ = 48380400.

The previous prime is 79827953. The next prime is 79827961. The reversal of 79827957 is 75972897.

It is an interprime number because it is at equal distance from previous prime (79827953) and next prime (79827961).

It is not a de Polignac number, because 79827957 - 2² = 79827953 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79827953) 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 15 ways as a sum of consecutive naturals, for example, 134094 + ... + 134687.

It is an arithmetic number, because the mean of its divisors is an integer number (8063460).

Almost surely, 2^79827957 is an apocalyptic number.

It is an amenable number.

79827957 is a deficient number, since it is larger than the sum of its proper divisors (49187403).

79827957 is a wasteful number, since it uses less digits than its factorization.

79827957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268801 (or 268795 counting only the distinct ones).

The product of its digits is 2222640, while the sum is 54.

The square root of 79827957 is about 8934.6492376590. The cubic root of 79827957 is about 430.5778368163.

The spelling of 79827957 in words is "seventy-nine million, eight hundred twenty-seven thousand, nine hundred fifty-seven".