90430986 has 32 divisors (see below), whose sum is σ = 189210240. Its totient is φ = 28759104.

The previous prime is 90430981. The next prime is 90430987. The reversal of 90430986 is 68903409.

It is not an unprimeable number, because it can be changed into a prime (90430981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84060 + ... + 85128.

It is an arithmetic number, because the mean of its divisors is an integer number (5912820).

Almost surely, 2^90430986 is an apocalyptic number.

90430986 is an abundant number, since it is smaller than the sum of its proper divisors (98779254).

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

90430986 is a wasteful number, since it uses less digits than its factorization.

90430986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1710.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 90430986 is about 9509.5208081165. The cubic root of 90430986 is about 448.8546775666.

The spelling of 90430986 in words is "ninety million, four hundred thirty thousand, nine hundred eighty-six".