869933813 has 4 divisors (see below), whose sum is σ = 994210080. Its totient is φ = 745657548.

The previous prime is 869933767. The next prime is 869933821. The reversal of 869933813 is 318339968.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 869933813 - 2¹² = 869929717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869933833) 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 3 ways as a sum of consecutive naturals, for example, 62138123 + ... + 62138136.

It is an arithmetic number, because the mean of its divisors is an integer number (248552520).

Almost surely, 2^869933813 is an apocalyptic number.

It is an amenable number.

869933813 is a deficient number, since it is larger than the sum of its proper divisors (124276267).

869933813 is a wasteful number, since it uses less digits than its factorization.

869933813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124276266.

The product of its digits is 839808, while the sum is 50.

The square root of 869933813 is about 29494.6404114375. The cubic root of 869933813 is about 954.6160615958.

The spelling of 869933813 in words is "eight hundred sixty-nine million, nine hundred thirty-three thousand, eight hundred thirteen".