918944 has 36 divisors (see below), whose sum is σ = 1990674. Its totient is φ = 415104.

The previous prime is 918943. The next prime is 918947. The reversal of 918944 is 449819.

It can be written as a sum of positive squares in only one way, i.e., 883600 + 35344 = 940^2 + 188^2 .

It is not an unprimeable number, because it can be changed into a prime (918943) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 19529 + ... + 19575.

2⁹¹⁸⁹⁴⁴ is an apocalyptic number.

918944 is a gapful number since it is divisible by the number (94) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 918944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (995337).

918944 is an abundant number, since it is smaller than the sum of its proper divisors (1071730).

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

918944 is a wasteful number, since it uses less digits than its factorization.

918944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 62 counting only the distinct ones).

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

The square root of 918944 is about 958.6156685554. The cubic root of 918944 is about 97.2216562809.

The spelling of 918944 in words is "nine hundred eighteen thousand, nine hundred forty-four".