9078990 has 48 divisors (see below), whose sum is σ = 22425552. Its totient is φ = 2352256.

The previous prime is 9078973. The next prime is 9079013. The reversal of 9078990 is 998709.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66202 + ... + 66338.

It is an arithmetic number, because the mean of its divisors is an integer number (467199).

Almost surely, 2^9078990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9078990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11212776).

9078990 is an abundant number, since it is smaller than the sum of its proper divisors (13346562).

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

9078990 is a wasteful number, since it uses less digits than its factorization.

9078990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 9078990 is about 3013.1362398670. The cubic root of 9078990 is about 208.6151506961.

The spelling of 9078990 in words is "nine million, seventy-eight thousand, nine hundred ninety".