869442291 has 6 divisors (see below), whose sum is σ = 1255861100. Its totient is φ = 579628188.

The previous prime is 869442289. The next prime is 869442311. The reversal of 869442291 is 192244968.

It is not a de Polignac number, because 869442291 - 2¹ = 869442289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (869442281) 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 5 ways as a sum of consecutive naturals, for example, 48302341 + ... + 48302358.

Almost surely, 2^869442291 is an apocalyptic number.

869442291 is a deficient number, since it is larger than the sum of its proper divisors (386418809).

869442291 is a wasteful number, since it uses less digits than its factorization.

869442291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96604705 (or 96604702 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 869442291 is about 29486.3068389380. The cubic root of 869442291 is about 954.4362382625.

The spelling of 869442291 in words is "eight hundred sixty-nine million, four hundred forty-two thousand, two hundred ninety-one".