90539839585 has 32 divisors (see below), whose sum is σ = 123235580160. Its totient is φ = 63304167168.

The previous prime is 90539839571. The next prime is 90539839619. The reversal of 90539839585 is 58593893509.

It is a happy number.

It is not a de Polignac number, because 90539839585 - 2²⁷ = 90405621857 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2181447 + ... + 2222563.

It is an arithmetic number, because the mean of its divisors is an integer number (3851111880).

Almost surely, 2^90539839585 is an apocalyptic number.

90539839585 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

90539839585 is a deficient number, since it is larger than the sum of its proper divisors (32695740575).

90539839585 is a wasteful number, since it uses less digits than its factorization.

90539839585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42937.

The product of its (nonzero) digits is 52488000, while the sum is 64.

The spelling of 90539839585 in words is "ninety billion, five hundred thirty-nine million, eight hundred thirty-nine thousand, five hundred eighty-five".