9012990 has 64 divisors (see below), whose sum is σ = 24966144. Its totient is φ = 2039808.

The previous prime is 9012979. The next prime is 9013019. The reversal of 9012990 is 992109.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34942 + ... + 35198.

It is an arithmetic number, because the mean of its divisors is an integer number (390096).

Almost surely, 2^9012990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9012990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12483072).

9012990 is an abundant number, since it is smaller than the sum of its proper divisors (15953154).

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

9012990 is a wasteful number, since it uses less digits than its factorization.

9012990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441.

The product of its (nonzero) digits is 1458, while the sum is 30.

The square root of 9012990 is about 3002.1642193591. The cubic root of 9012990 is about 208.1084093404.

The spelling of 9012990 in words is "nine million, twelve thousand, nine hundred ninety".