90994185 has 20 divisors (see below), whose sum is σ = 163116228. Its totient is φ = 48530016.

The previous prime is 90994159. The next prime is 90994219. The reversal of 90994185 is 58149909.

It can be written as a sum of positive squares in 2 ways, for example, as 72641529 + 18352656 = 8523^2 + 4284^2 .

It is not a de Polignac number, because 90994185 - 2¹¹ = 90992137 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 90994185.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 111934 + ... + 112743.

Almost surely, 2^90994185 is an apocalyptic number.

It is an amenable number.

90994185 is a deficient number, since it is larger than the sum of its proper divisors (72122043).

90994185 is a wasteful number, since it uses less digits than its factorization.

90994185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224694 (or 224685 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 90994185 is about 9539.0872204839. The cubic root of 90994185 is about 449.7845635434.

The spelling of 90994185 in words is "ninety million, nine hundred ninety-four thousand, one hundred eighty-five".