90498999 has 8 divisors (see below), whose sum is σ = 121340160. Its totient is φ = 59995256.

The previous prime is 90498959. The next prime is 90499001. The reversal of 90498999 is 99989409.

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

It is a cyclic number.

It is not a de Polignac number, because 90498999 - 2⁹ = 90498487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90498949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83727 + ... + 84800.

It is an arithmetic number, because the mean of its divisors is an integer number (15167520).

Almost surely, 2^90498999 is an apocalyptic number.

90498999 is a deficient number, since it is larger than the sum of its proper divisors (30841161).

90498999 is a wasteful number, since it uses less digits than its factorization.

90498999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168709.

The product of its (nonzero) digits is 1889568, while the sum is 57.

The square root of 90498999 is about 9513.0961836828. The cubic root of 90498999 is about 448.9671769962.

The spelling of 90498999 in words is "ninety million, four hundred ninety-eight thousand, nine hundred ninety-nine".