90886986 has 48 divisors (see below), whose sum is σ = 205194600. Its totient is φ = 29038464.

The previous prime is 90886979. The next prime is 90886987. The reversal of 90886986 is 68968809.

It can be written as a sum of positive squares in 4 ways, for example, as 42653961 + 48233025 = 6531^2 + 6945^2 .

It is not an unprimeable number, because it can be changed into a prime (90886987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81400 + ... + 82508.

Almost surely, 2^90886986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90886986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102597300).

90886986 is an abundant number, since it is smaller than the sum of its proper divisors (114307614).

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

90886986 is a wasteful number, since it uses less digits than its factorization.

90886986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303 (or 1300 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The square root of 90886986 is about 9533.4666307697. The cubic root of 90886986 is about 449.6078657973.

The spelling of 90886986 in words is "ninety million, eight hundred eighty-six thousand, nine hundred eighty-six".