90234491859 has 8 divisors (see below), whose sum is σ = 133680728720. Its totient is φ = 60156327888.

The previous prime is 90234491849. The next prime is 90234491863. The reversal of 90234491859 is 95819443209.

It is not a de Polignac number, because 90234491859 - 2⁷ = 90234491731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90234491849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1671009082 + ... + 1671009135.

It is an arithmetic number, because the mean of its divisors is an integer number (16710091090).

Almost surely, 2^90234491859 is an apocalyptic number.

90234491859 is a deficient number, since it is larger than the sum of its proper divisors (43446236861).

90234491859 is a wasteful number, since it uses less digits than its factorization.

90234491859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3342018226 (or 3342018220 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 90234491859 in words is "ninety billion, two hundred thirty-four million, four hundred ninety-one thousand, eight hundred fifty-nine".