90009080 has 96 divisors (see below), whose sum is σ = 248086800. Its totient is φ = 29223936.

The previous prime is 90009053. The next prime is 90009119. The reversal of 90009080 is 8090009.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 36032 + ... + 38448.

Almost surely, 2^90009080 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 90009080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124043400).

90009080 is an abundant number, since it is smaller than the sum of its proper divisors (158077720).

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

90009080 is a wasteful number, since it uses less digits than its factorization.

90009080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2461 (or 2450 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 90009080 is about 9487.3115264547. The cubic root of 90009080 is about 448.1555449471.

Adding to 90009080 its reverse (8090009), we get a palindrome (98099089).

The spelling of 90009080 in words is "ninety million, nine thousand, eighty".