9900844 has 24 divisors (see below), whose sum is σ = 18013968. Its totient is φ = 4757760.

The previous prime is 9900827. The next prime is 9900857. The reversal of 9900844 is 4480099.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11559 + ... + 12385.

It is an arithmetic number, because the mean of its divisors is an integer number (750582).

Almost surely, 2^9900844 is an apocalyptic number.

It is an amenable number.

9900844 is a deficient number, since it is larger than the sum of its proper divisors (8113124).

9900844 is a wasteful number, since it uses less digits than its factorization.

9900844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945 (or 943 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 9900844 is about 3146.5606620563. The cubic root of 9900844 is about 214.7290186188.

The spelling of 9900844 in words is "nine million, nine hundred thousand, eight hundred forty-four".