85872859 has 2 divisors, whose sum is σ = 85872860. Its totient is φ = 85872858.

The previous prime is 85872827. The next prime is 85872863. The reversal of 85872859 is 95827858.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85872859 - 2⁵ = 85872827 is a prime.

It is not a weakly prime, because it can be changed into another prime (85872889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42936429 + 42936430.

It is an arithmetic number, because the mean of its divisors is an integer number (42936430).

Almost surely, 2^85872859 is an apocalyptic number.

85872859 is a deficient number, since it is larger than the sum of its proper divisors (1).

85872859 is an equidigital number, since it uses as much as digits as its factorization.

85872859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1612800, while the sum is 52.

The square root of 85872859 is about 9266.7609767383. The cubic root of 85872859 is about 441.1828691942.

The spelling of 85872859 in words is "eighty-five million, eight hundred seventy-two thousand, eight hundred fifty-nine".