85918799 has 4 divisors (see below), whose sum is σ = 90972864. Its totient is φ = 80864736.

The previous prime is 85918787. The next prime is 85918801. The reversal of 85918799 is 99781958.

It is a happy number.

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 85918799 - 2⁴ = 85918783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85918769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2527007 + ... + 2527040.

It is an arithmetic number, because the mean of its divisors is an integer number (22743216).

Almost surely, 2^85918799 is an apocalyptic number.

85918799 is a deficient number, since it is larger than the sum of its proper divisors (5054065).

85918799 is a wasteful number, since it uses less digits than its factorization.

85918799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5054064.

The product of its digits is 1632960, while the sum is 56.

The square root of 85918799 is about 9269.2393970595. The cubic root of 85918799 is about 441.2615293903.

The spelling of 85918799 in words is "eighty-five million, nine hundred eighteen thousand, seven hundred ninety-nine".