869265491 has 4 divisors (see below), whose sum is σ = 869485800. Its totient is φ = 869045184.

The previous prime is 869265479. The next prime is 869265493. The reversal of 869265491 is 194562968.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-869265491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (869265493) 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, 104126 + ... + 112163.

It is an arithmetic number, because the mean of its divisors is an integer number (217371450).

Almost surely, 2^869265491 is an apocalyptic number.

869265491 is a deficient number, since it is larger than the sum of its proper divisors (220309).

869265491 is a wasteful number, since it uses less digits than its factorization.

869265491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220308.

The product of its digits is 933120, while the sum is 50.

The square root of 869265491 is about 29483.3086847457. The cubic root of 869265491 is about 954.3715394059.

The spelling of 869265491 in words is "eight hundred sixty-nine million, two hundred sixty-five thousand, four hundred ninety-one".