85979699 has 4 divisors (see below), whose sum is σ = 92593536. Its totient is φ = 79365864.

The previous prime is 85979687. The next prime is 85979713. The reversal of 85979699 is 99697958.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85979699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85979609) 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, 3306899 + ... + 3306924.

It is an arithmetic number, because the mean of its divisors is an integer number (23148384).

Almost surely, 2^85979699 is an apocalyptic number.

85979699 is a deficient number, since it is larger than the sum of its proper divisors (6613837).

85979699 is a wasteful number, since it uses less digits than its factorization.

85979699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6613836.

The product of its digits is 11022480, while the sum is 62.

The square root of 85979699 is about 9272.5238743289. The cubic root of 85979699 is about 441.3657614509.

The spelling of 85979699 in words is "eighty-five million, nine hundred seventy-nine thousand, six hundred ninety-nine".