869120365 has 4 divisors (see below), whose sum is σ = 1042944444. Its totient is φ = 695296288.

The previous prime is 869120353. The next prime is 869120411. The reversal of 869120365 is 563021968.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 654234084 + 214886281 = 25578^2 + 14659^2 .

It is a cyclic number.

It is not a de Polignac number, because 869120365 - 2⁷ = 869120237 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86912032 + ... + 86912041.

It is an arithmetic number, because the mean of its divisors is an integer number (260736111).

Almost surely, 2^869120365 is an apocalyptic number.

It is an amenable number.

869120365 is a deficient number, since it is larger than the sum of its proper divisors (173824079).

869120365 is a wasteful number, since it uses less digits than its factorization.

869120365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173824078.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 869120365 is about 29480.8474267617. The cubic root of 869120365 is about 954.3184248956.

The spelling of 869120365 in words is "eight hundred sixty-nine million, one hundred twenty thousand, three hundred sixty-five".