869572479 has 4 divisors (see below), whose sum is σ = 1159429976. Its totient is φ = 579714984.

The previous prime is 869572471. The next prime is 869572481. The reversal of 869572479 is 974275968.

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

It is not a de Polignac number, because 869572479 - 2³ = 869572471 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 (869572471) 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, 144928744 + ... + 144928749.

It is an arithmetic number, because the mean of its divisors is an integer number (289857494).

Almost surely, 2^869572479 is an apocalyptic number.

869572479 is a deficient number, since it is larger than the sum of its proper divisors (289857497).

869572479 is a wasteful number, since it uses less digits than its factorization.

869572479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289857496.

The product of its digits is 7620480, while the sum is 57.

The square root of 869572479 is about 29488.5143572883. The cubic root of 869572479 is about 954.4838741416.

The spelling of 869572479 in words is "eight hundred sixty-nine million, five hundred seventy-two thousand, four hundred seventy-nine".