9901844 has 12 divisors (see below), whose sum is σ = 17371284. Its totient is φ = 4938624.

The previous prime is 9901841. The next prime is 9901867. The reversal of 9901844 is 4481099.

It can be written as a sum of positive squares in 2 ways, for example, as 3204100 + 6697744 = 1790^2 + 2588^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9901841) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1127 + ... + 4590.

It is an arithmetic number, because the mean of its divisors is an integer number (1447607).

Almost surely, 2^9901844 is an apocalyptic number.

It is an amenable number.

9901844 is a deficient number, since it is larger than the sum of its proper divisors (7469440).

9901844 is a wasteful number, since it uses less digits than its factorization.

9901844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6154 (or 6152 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 9901844 is about 3146.7195617023. The cubic root of 9901844 is about 214.7362476924.

The spelling of 9901844 in words is "nine million, nine hundred one thousand, eight hundred forty-four".