90150986 has 8 divisors (see below), whose sum is σ = 137778084. Its totient is φ = 44224960.

The previous prime is 90150971. The next prime is 90150989. The reversal of 90150986 is 68905109.

It can be written as a sum of positive squares in 2 ways, for example, as 89965225 + 185761 = 9485^2 + 431^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90150989) 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, 425135 + ... + 425346.

Almost surely, 2^90150986 is an apocalyptic number.

90150986 is a deficient number, since it is larger than the sum of its proper divisors (47627098).

90150986 is a wasteful number, since it uses less digits than its factorization.

90150986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850536.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 90150986 is about 9494.7873067278. The cubic root of 90150986 is about 448.3909381199.

The spelling of 90150986 in words is "ninety million, one hundred fifty thousand, nine hundred eighty-six".