90489518 has 8 divisors (see below), whose sum is σ = 155124912. Its totient is φ = 38781216.

The previous prime is 90489499. The next prime is 90489547. The reversal of 90489518 is 81598409.

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

It is a Curzon number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 3231755 + ... + 3231782.

It is an arithmetic number, because the mean of its divisors is an integer number (19390614).

Almost surely, 2^90489518 is an apocalyptic number.

90489518 is a deficient number, since it is larger than the sum of its proper divisors (64635394).

90489518 is a wasteful number, since it uses less digits than its factorization.

90489518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6463546.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 90489518 is about 9512.5978575781. The cubic root of 90489518 is about 448.9514979776.

The spelling of 90489518 in words is "ninety million, four hundred eighty-nine thousand, five hundred eighteen".