90466838779 has 16 divisors (see below), whose sum is σ = 93552076800. Its totient is φ = 87431037120.

The previous prime is 90466838723. The next prime is 90466838807. The reversal of 90466838779 is 97783866409.

It is a cyclic number.

It is not a de Polignac number, because 90466838779 - 2²⁷ = 90332621051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90466838719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9829822 + ... + 9839020.

It is an arithmetic number, because the mean of its divisors is an integer number (5847004800).

Almost surely, 2^90466838779 is an apocalyptic number.

90466838779 is a deficient number, since it is larger than the sum of its proper divisors (3085238021).

90466838779 is a wasteful number, since it uses less digits than its factorization.

90466838779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11850.

The product of its (nonzero) digits is 109734912, while the sum is 67.

The spelling of 90466838779 in words is "ninety billion, four hundred sixty-six million, eight hundred thirty-eight thousand, seven hundred seventy-nine".