85977942 has 32 divisors (see below), whose sum is σ = 187951104. Its totient is φ = 26102400.

The previous prime is 85977937. The next prime is 85977961. The reversal of 85977942 is 24977958.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10434 + ... + 16757.

It is an arithmetic number, because the mean of its divisors is an integer number (5873472).

Almost surely, 2^85977942 is an apocalyptic number.

85977942 is an abundant number, since it is smaller than the sum of its proper divisors (101973162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85977942 is a wasteful number, since it uses less digits than its factorization.

85977942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27244.

The product of its digits is 1270080, while the sum is 51.

The square root of 85977942 is about 9272.4291315706. The cubic root of 85977942 is about 441.3627549857.

The spelling of 85977942 in words is "eighty-five million, nine hundred seventy-seven thousand, nine hundred forty-two".