79138827 has 12 divisors (see below), whose sum is σ = 114460320. Its totient is φ = 52690608.

The previous prime is 79138823. The next prime is 79138831. The reversal of 79138827 is 72883197.

It is an interprime number because it is at equal distance from previous prime (79138823) and next prime (79138831).

It is not a de Polignac number, because 79138827 - 2² = 79138823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79138823) 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, 2158 + ... + 12764.

It is an arithmetic number, because the mean of its divisors is an integer number (9538360).

Almost surely, 2^79138827 is an apocalyptic number.

79138827 is a deficient number, since it is larger than the sum of its proper divisors (35321493).

79138827 is a wasteful number, since it uses less digits than its factorization.

79138827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11442 (or 11439 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 79138827 is about 8896.0006182554. Note that the first 3 decimals coincide. The cubic root of 79138827 is about 429.3352392897.

The spelling of 79138827 in words is "seventy-nine million, one hundred thirty-eight thousand, eight hundred twenty-seven".