79142859 has 8 divisors (see below), whose sum is σ = 117248720. Its totient is φ = 52761888.

The previous prime is 79142851. The next prime is 79142863. The reversal of 79142859 is 95824197.

It is not a de Polignac number, because 79142859 - 2³ = 79142851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79142851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1465582 + ... + 1465635.

It is an arithmetic number, because the mean of its divisors is an integer number (14656090).

Almost surely, 2^79142859 is an apocalyptic number.

79142859 is a deficient number, since it is larger than the sum of its proper divisors (38105861).

79142859 is a wasteful number, since it uses less digits than its factorization.

79142859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2931226 (or 2931220 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 79142859 is about 8896.2272340583. The cubic root of 79142859 is about 429.3425304865.

The spelling of 79142859 in words is "seventy-nine million, one hundred forty-two thousand, eight hundred fifty-nine".