9890944 has 96 divisors (see below), whose sum is σ = 24418800. Its totient is φ = 3967488.

The previous prime is 9890941. The next prime is 9890977. The reversal of 9890944 is 4490989.

It is a super-2 number, since 2×9890944² = 195661546422272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9890944.

It is not an unprimeable number, because it can be changed into a prime (9890941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119127 + ... + 119209.

Almost surely, 2^9890944 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 9890944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12209400).

9890944 is an abundant number, since it is smaller than the sum of its proper divisors (14527856).

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

9890944 is a wasteful number, since it uses less digits than its factorization.

9890944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 9890944 is about 3144.9871223902. The cubic root of 9890944 is about 214.6574245128.

The spelling of 9890944 in words is "nine million, eight hundred ninety thousand, nine hundred forty-four".