85938979 has 16 divisors (see below), whose sum is σ = 99869440. Its totient is φ = 72433440.

The previous prime is 85938967. The next prime is 85938989. The reversal of 85938979 is 97983958.

It is a cyclic number.

It is not a de Polignac number, because 85938979 - 2¹¹ = 85936931 is a prime.

It is a super-2 number, since 2×85938979² = 14771016223124882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85938949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124024 + ... + 124714.

It is an arithmetic number, because the mean of its divisors is an integer number (6241840).

Almost surely, 2^85938979 is an apocalyptic number.

85938979 is a deficient number, since it is larger than the sum of its proper divisors (13930461).

85938979 is a wasteful number, since it uses less digits than its factorization.

85938979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970.

The product of its digits is 4898880, while the sum is 58.

The square root of 85938979 is about 9270.3278798541. The cubic root of 85938979 is about 441.2960734819.

The spelling of 85938979 in words is "eighty-five million, nine hundred thirty-eight thousand, nine hundred seventy-nine".