869964021233 has 4 divisors (see below), whose sum is σ = 870424565220. Its totient is φ = 869503477248.

The previous prime is 869964021229. The next prime is 869964021307. The reversal of 869964021233 is 332120469968.

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 369751557184 + 500212464049 = 608072^2 + 707257^2 .

It is a cyclic number.

It is not a de Polignac number, because 869964021233 - 2² = 869964021229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (869964221233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230269160 + ... + 230272937.

It is an arithmetic number, because the mean of its divisors is an integer number (217606141305).

Almost surely, 2^869964021233 is an apocalyptic number.

It is an amenable number.

869964021233 is a deficient number, since it is larger than the sum of its proper divisors (460543987).

869964021233 is a wasteful number, since it uses less digits than its factorization.

869964021233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460543986.

The product of its (nonzero) digits is 3359232, while the sum is 53.

The spelling of 869964021233 in words is "eight hundred sixty-nine billion, nine hundred sixty-four million, twenty-one thousand, two hundred thirty-three".