85873961 has 2 divisors, whose sum is σ = 85873962. Its totient is φ = 85873960.

The previous prime is 85873951. The next prime is 85874051. The reversal of 85873961 is 16937858.

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., 61716736 + 24157225 = 7856^2 + 4915^2 .

It is a cyclic number.

It is not a de Polignac number, because 85873961 - 2¹⁰ = 85872937 is a prime.

It is not a weakly prime, because it can be changed into another prime (85873951) 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, 42936980 + 42936981.

It is an arithmetic number, because the mean of its divisors is an integer number (42936981).

Almost surely, 2^85873961 is an apocalyptic number.

It is an amenable number.

85873961 is a deficient number, since it is larger than the sum of its proper divisors (1).

85873961 is an equidigital number, since it uses as much as digits as its factorization.

85873961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 47.

The square root of 85873961 is about 9266.8204363741. The cubic root of 85873961 is about 441.1847564084.

The spelling of 85873961 in words is "eighty-five million, eight hundred seventy-three thousand, nine hundred sixty-one".