90985773 has 8 divisors (see below), whose sum is σ = 121475200. Its totient is φ = 60576768.

The previous prime is 90985759. The next prime is 90985781. The reversal of 90985773 is 37758909.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90985773 - 2⁴ = 90985757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90985733) 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, 17413 + ... + 22026.

It is an arithmetic number, because the mean of its divisors is an integer number (15184400).

Almost surely, 2^90985773 is an apocalyptic number.

It is an amenable number.

90985773 is a deficient number, since it is larger than the sum of its proper divisors (30489427).

90985773 is a wasteful number, since it uses less digits than its factorization.

90985773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40211.

The product of its (nonzero) digits is 476280, while the sum is 48.

The square root of 90985773 is about 9538.6462876029. The cubic root of 90985773 is about 449.7707029348.

The spelling of 90985773 in words is "ninety million, nine hundred eighty-five thousand, seven hundred seventy-three".