90092881 has 4 divisors (see below), whose sum is σ = 90112612. Its totient is φ = 90073152.

The previous prime is 90092861. The next prime is 90092917. The reversal of 90092881 is 18829009.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87890625 + 2202256 = 9375^2 + 1484^2 .

It is a cyclic number.

It is not a de Polignac number, because 90092881 - 2⁹ = 90092369 is a prime.

It is a super-2 number, since 2×90092881² = 16233454413760322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90092881.

It is not an unprimeable number, because it can be changed into a prime (90092861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 901 + ... + 13453.

It is an arithmetic number, because the mean of its divisors is an integer number (22528153).

Almost surely, 2^90092881 is an apocalyptic number.

It is an amenable number.

90092881 is a deficient number, since it is larger than the sum of its proper divisors (19731).

90092881 is a wasteful number, since it uses less digits than its factorization.

90092881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19730.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 90092881 is about 9491.7269766887. The cubic root of 90092881 is about 448.2945836369.

The spelling of 90092881 in words is "ninety million, ninety-two thousand, eight hundred eighty-one".