85979842 has 16 divisors (see below), whose sum is σ = 144930240. Its totient is φ = 37957392.

The previous prime is 85979813. The next prime is 85979843. The reversal of 85979842 is 24897958.

It is a self number, because there is not a number n which added to its sum of digits gives 85979842.

It is not an unprimeable number, because it can be changed into a prime (85979843) 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, 71292 + ... + 72487.

It is an arithmetic number, because the mean of its divisors is an integer number (9058140).

Almost surely, 2^85979842 is an apocalyptic number.

85979842 is a deficient number, since it is larger than the sum of its proper divisors (58950398).

85979842 is a wasteful number, since it uses less digits than its factorization.

85979842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143817.

The product of its digits is 1451520, while the sum is 52.

The square root of 85979842 is about 9272.5315852792. The cubic root of 85979842 is about 441.3660061415.

The spelling of 85979842 in words is "eighty-five million, nine hundred seventy-nine thousand, eight hundred forty-two".