864313769 has 6 divisors (see below), whose sum is σ = 950030970. Its totient is φ = 785739680.

The previous prime is 864313763. The next prime is 864313783. The reversal of 864313769 is 967313468.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 464833600 + 399480169 = 21560^2 + 19987^2 .

It is not a de Polignac number, because 864313769 - 2⁴ = 864313753 is a prime.

It is a super-2 number, since 2×864313769² = 1494076582565970722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (864313763) 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 in 5 ways as a sum of consecutive naturals, for example, 3571424 + ... + 3571665.

It is an arithmetic number, because the mean of its divisors is an integer number (158338495).

Almost surely, 2^864313769 is an apocalyptic number.

It is an amenable number.

864313769 is a deficient number, since it is larger than the sum of its proper divisors (85717201).

864313769 is a wasteful number, since it uses less digits than its factorization.

864313769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7143111 (or 7143100 counting only the distinct ones).

The product of its digits is 653184, while the sum is 47.

The square root of 864313769 is about 29399.2137479899. The cubic root of 864313769 is about 952.5559128844. Note that the first 3 decimals are identical.

The spelling of 864313769 in words is "eight hundred sixty-four million, three hundred thirteen thousand, seven hundred sixty-nine".