85918937 has 4 divisors (see below), whose sum is σ = 92528100. Its totient is φ = 79309776.

The previous prime is 85918907. The next prime is 85918957. The reversal of 85918937 is 73981958.

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

It can be written as a sum of positive squares in 2 ways, for example, as 22174681 + 63744256 = 4709^2 + 7984^2 .

It is not a de Polignac number, because 85918937 - 2⁶ = 85918873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85918907) 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, 3304562 + ... + 3304587.

It is an arithmetic number, because the mean of its divisors is an integer number (23132025).

Almost surely, 2^85918937 is an apocalyptic number.

It is an amenable number.

85918937 is a deficient number, since it is larger than the sum of its proper divisors (6609163).

85918937 is a wasteful number, since it uses less digits than its factorization.

85918937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6609162.

The product of its digits is 544320, while the sum is 50.

The square root of 85918937 is about 9269.2468410330. The cubic root of 85918937 is about 441.2617656368.

It can be divided in two parts, 8591 and 8937, that multiplied together give a palindrome (76777767).

The spelling of 85918937 in words is "eighty-five million, nine hundred eighteen thousand, nine hundred thirty-seven".