90116490 has 32 divisors (see below), whose sum is σ = 229003200. Its totient is φ = 22617344.

The previous prime is 90116447. The next prime is 90116491. The reversal of 90116490 is 9461109.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (90116491) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 87840 + ... + 88859.

It is an arithmetic number, because the mean of its divisors is an integer number (7156350).

Almost surely, 2^90116490 is an apocalyptic number.

90116490 is an abundant number, since it is smaller than the sum of its proper divisors (138886710).

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

90116490 is a wasteful number, since it uses less digits than its factorization.

90116490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176726.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 90116490 is about 9492.9705572071. The cubic root of 90116490 is about 448.3337390150. Note that the first 3 decimals are identical.

Adding to 90116490 its reverse (9461109), we get a palindrome (99577599).

It can be divided in two parts, 901 and 16490, that added together give a triangular number (17391 = T₁₈₆).

The spelling of 90116490 in words is "ninety million, one hundred sixteen thousand, four hundred ninety".