8990424 has 96 divisors (see below), whose sum is σ = 26114400. Its totient is φ = 2787840.

The previous prime is 8990413. The next prime is 8990431. The reversal of 8990424 is 4240998.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100972 + ... + 101060.

It is an arithmetic number, because the mean of its divisors is an integer number (272025).

Almost surely, 2^8990424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8990424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13057200).

8990424 is an abundant number, since it is smaller than the sum of its proper divisors (17123976).

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

8990424 is a wasteful number, since it uses less digits than its factorization.

8990424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 8990424 is about 2998.4035752380. The cubic root of 8990424 is about 207.9345824851.

The spelling of 8990424 in words is "eight million, nine hundred ninety thousand, four hundred twenty-four".