85899873 has 4 divisors (see below), whose sum is σ = 114533168. Its totient is φ = 57266580.

The previous prime is 85899857. The next prime is 85899887. The reversal of 85899873 is 37899858.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 85899873 - 2⁴ = 85899857 is a prime.

It is a super-2 number, since 2×85899873² = 14757576362832258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85899673) 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, 14316643 + ... + 14316648.

It is an arithmetic number, because the mean of its divisors is an integer number (28633292).

Almost surely, 2^85899873 is an apocalyptic number.

It is an amenable number.

85899873 is a deficient number, since it is larger than the sum of its proper divisors (28633295).

85899873 is a wasteful number, since it uses less digits than its factorization.

85899873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28633294.

The product of its digits is 4354560, while the sum is 57.

The square root of 85899873 is about 9268.2184372187. The cubic root of 85899873 is about 441.2291269782.

The spelling of 85899873 in words is "eighty-five million, eight hundred ninety-nine thousand, eight hundred seventy-three".