85869937 has 2 divisors, whose sum is σ = 85869938. Its totient is φ = 85869936.

The previous prime is 85869923. The next prime is 85869983. The reversal of 85869937 is 73996858.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63297936 + 22572001 = 7956^2 + 4751^2 .

It is a cyclic number.

It is not a de Polignac number, because 85869937 - 2⁷ = 85869809 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85869997) 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 as a sum of consecutive naturals, namely, 42934968 + 42934969.

It is an arithmetic number, because the mean of its divisors is an integer number (42934969).

Almost surely, 2^85869937 is an apocalyptic number.

It is an amenable number.

85869937 is a deficient number, since it is larger than the sum of its proper divisors (1).

85869937 is an equidigital number, since it uses as much as digits as its factorization.

85869937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 55.

The square root of 85869937 is about 9266.6033151312. The cubic root of 85869937 is about 441.1778650870.

The spelling of 85869937 in words is "eighty-five million, eight hundred sixty-nine thousand, nine hundred thirty-seven".