909944 has 16 divisors (see below), whose sum is σ = 1950000. Its totient is φ = 389952.

The previous prime is 909917. The next prime is 909971. The reversal of 909944 is 449909.

It is an interprime number because it is at equal distance from previous prime (909917) and next prime (909971).

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 909944.

It is an unprimeable number.

909944 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 3 ways as a sum of consecutive naturals, for example, 8069 + ... + 8180.

It is an arithmetic number, because the mean of its divisors is an integer number (121875).

2⁹⁰⁹⁹⁴⁴ is an apocalyptic number.

It is an amenable number.

909944 is an abundant number, since it is smaller than the sum of its proper divisors (1040056).

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

909944 is a wasteful number, since it uses less digits than its factorization.

909944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16262 (or 16258 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 909944 is about 953.9098489899. The cubic root of 909944 is about 96.9032229944.

Subtracting from 909944 its sum of digits (35), we obtain a palindrome (909909).

The spelling of 909944 in words is "nine hundred nine thousand, nine hundred forty-four".