90283986 has 48 divisors (see below), whose sum is σ = 211452696. Its totient is φ = 27675648.

The previous prime is 90283979. The next prime is 90284027. The reversal of 90283986 is 68938209.

It can be written as a sum of positive squares in 4 ways, for example, as 82246761 + 8037225 = 9069^2 + 2835^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82056 + ... + 83148.

Almost surely, 2^90283986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90283986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105726348).

90283986 is an abundant number, since it is smaller than the sum of its proper divisors (121168710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90283986 is a wasteful number, since it uses less digits than its factorization.

90283986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467 (or 1464 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 90283986 is about 9501.7885684749. The cubic root of 90283986 is about 448.6113339039.

The spelling of 90283986 in words is "ninety million, two hundred eighty-three thousand, nine hundred eighty-six".