919944 has 32 divisors (see below), whose sum is σ = 2556000. Its totient is φ = 306576.

The previous prime is 919939. The next prime is 919949. The reversal of 919944 is 449919.

It is an interprime number because it is at equal distance from previous prime (919939) and next prime (919949).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 919899 and 919908.

It is not an unprimeable number, because it can be changed into a prime (919949) by changing a digit.

919944 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 (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1914 + ... + 2345.

It is an arithmetic number, because the mean of its divisors is an integer number (79875).

2⁹¹⁹⁹⁴⁴ is an apocalyptic number.

It is an amenable number.

919944 is an abundant number, since it is smaller than the sum of its proper divisors (1636056).

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

919944 is a wasteful number, since it uses less digits than its factorization.

919944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4274 (or 4264 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 919944 is about 959.1371122003. The cubic root of 919944 is about 97.2569092132.

The spelling of 919944 in words is "nine hundred nineteen thousand, nine hundred forty-four".