864759913 has 2 divisors, whose sum is σ = 864759914. Its totient is φ = 864759912.

The previous prime is 864759887. The next prime is 864759953. The reversal of 864759913 is 319957468.

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., 795070809 + 69689104 = 28197^2 + 8348^2 .

It is a cyclic number.

It is not a de Polignac number, because 864759913 - 2¹³ = 864751721 is a prime.

It is not a weakly prime, because it can be changed into another prime (864759953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432379956 + 432379957.

It is an arithmetic number, because the mean of its divisors is an integer number (432379957).

Almost surely, 2^864759913 is an apocalyptic number.

It is an amenable number.

864759913 is a deficient number, since it is larger than the sum of its proper divisors (1).

864759913 is an equidigital number, since it uses as much as digits as its factorization.

864759913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 52.

The square root of 864759913 is about 29406.8004549968. The cubic root of 864759913 is about 952.7197823878.

The spelling of 864759913 in words is "eight hundred sixty-four million, seven hundred fifty-nine thousand, nine hundred thirteen".