869023553 has 4 divisors (see below), whose sum is σ = 871292928. Its totient is φ = 866754180.

The previous prime is 869023531. The next prime is 869023601. The reversal of 869023553 is 355320968.

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 869023553 - 2⁶ = 869023489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 869023553.

It is not an unprimeable number, because it can be changed into a prime (869023453) 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, 1134113 + ... + 1134878.

It is an arithmetic number, because the mean of its divisors is an integer number (217823232).

Almost surely, 2^869023553 is an apocalyptic number.

It is an amenable number.

869023553 is a deficient number, since it is larger than the sum of its proper divisors (2269375).

869023553 is a wasteful number, since it uses less digits than its factorization.

869023553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2269374.

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 869023553 is about 29479.2054336612. The cubic root of 869023553 is about 954.2829894869.

The spelling of 869023553 in words is "eight hundred sixty-nine million, twenty-three thousand, five hundred fifty-three".