85846979 has 4 divisors (see below), whose sum is σ = 86291976. Its totient is φ = 85401984.

The previous prime is 85846961. The next prime is 85847039. The reversal of 85846979 is 97964858.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85846979 - 2⁸ = 85846723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85845979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222209 + ... + 222594.

It is an arithmetic number, because the mean of its divisors is an integer number (21572994).

Almost surely, 2^85846979 is an apocalyptic number.

85846979 is a deficient number, since it is larger than the sum of its proper divisors (444997).

85846979 is a wasteful number, since it uses less digits than its factorization.

85846979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444996.

The product of its digits is 4354560, while the sum is 56.

The square root of 85846979 is about 9265.3644828469. The cubic root of 85846979 is about 441.1385441304.

The spelling of 85846979 in words is "eighty-five million, eight hundred forty-six thousand, nine hundred seventy-nine".