9097990 has 48 divisors (see below), whose sum is σ = 18424224. Its totient is φ = 3231360.

The previous prime is 9097987. The next prime is 9097999. The reversal of 9097990 is 997909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9097999) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88279 + ... + 88381.

It is an arithmetic number, because the mean of its divisors is an integer number (383838).

Almost surely, 2^9097990 is an apocalyptic number.

9097990 is an abundant number, since it is smaller than the sum of its proper divisors (9326234).

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

9097990 is a wasteful number, since it uses less digits than its factorization.

9097990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 45927, while the sum is 43.

The square root of 9097990 is about 3016.2874531450. The cubic root of 9097990 is about 208.7605753185.

The spelling of 9097990 in words is "nine million, ninety-seven thousand, nine hundred ninety".