9009140 has 72 divisors (see below), whose sum is σ = 22838760. Its totient is φ = 2972928.

The previous prime is 9009107. The next prime is 9009157. The reversal of 9009140 is 419009.

It can be written as a sum of positive squares in 4 ways, for example, as 33124 + 8976016 = 182^2 + 2996^2 .

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, 28262 + ... + 28578.

It is an arithmetic number, because the mean of its divisors is an integer number (317205).

Almost surely, 2^9009140 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 9009140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11419380).

9009140 is an abundant number, since it is smaller than the sum of its proper divisors (13829620).

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

9009140 is a wasteful number, since it uses less digits than its factorization.

9009140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 9009140 is about 3001.5229467722. The cubic root of 9009140 is about 208.0787731714.

The spelling of 9009140 in words is "nine million, nine thousand, one hundred forty".