859364891 has 32 divisors (see below), whose sum is σ = 1099008000. Its totient is φ = 666133440.

The previous prime is 859364881. The next prime is 859364903. The reversal of 859364891 is 198463958.

It is not a de Polignac number, because 859364891 - 2²⁶ = 792256027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (859364881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 901271 + ... + 902223.

It is an arithmetic number, because the mean of its divisors is an integer number (34344000).

Almost surely, 2^859364891 is an apocalyptic number.

859364891 is a deficient number, since it is larger than the sum of its proper divisors (239643109).

859364891 is a wasteful number, since it uses less digits than its factorization.

859364891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224 (or 1210 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 53.

The square root of 859364891 is about 29314.9260787060. The cubic root of 859364891 is about 950.7343872682.

The spelling of 859364891 in words is "eight hundred fifty-nine million, three hundred sixty-four thousand, eight hundred ninety-one".