85905937 has 4 divisors (see below), whose sum is σ = 92514100. Its totient is φ = 79297776.

The previous prime is 85905923. The next prime is 85905949. The reversal of 85905937 is 73950958.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73950958 = 2 ⋅36975479.

It can be written as a sum of positive squares in 2 ways, for example, as 57699216 + 28206721 = 7596^2 + 5311^2 .

It is a cyclic number.

It is not a de Polignac number, because 85905937 - 2¹⁵ = 85873169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85905977) 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, 3304062 + ... + 3304087.

It is an arithmetic number, because the mean of its divisors is an integer number (23128525).

Almost surely, 2^85905937 is an apocalyptic number.

It is an amenable number.

85905937 is a deficient number, since it is larger than the sum of its proper divisors (6608163).

85905937 is a wasteful number, since it uses less digits than its factorization.

85905937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6608162.

The product of its (nonzero) digits is 340200, while the sum is 46.

The square root of 85905937 is about 9268.5455709081. The cubic root of 85905937 is about 441.2395094168.

The spelling of 85905937 in words is "eighty-five million, nine hundred five thousand, nine hundred thirty-seven".