993944 has 16 divisors (see below), whose sum is σ = 2130000. Its totient is φ = 425952.

The previous prime is 993943. The next prime is 993961. The reversal of 993944 is 449399.

993944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 993898 and 993907.

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 993944.

It is not an unprimeable number, because it can be changed into a prime (993943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8819 + ... + 8930.

It is an arithmetic number, because the mean of its divisors is an integer number (133125).

2⁹⁹³⁹⁴⁴ is an apocalyptic number.

It is an amenable number.

993944 is an abundant number, since it is smaller than the sum of its proper divisors (1136056).

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

993944 is a wasteful number, since it uses less digits than its factorization.

993944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17762 (or 17758 counting only the distinct ones).

The product of its digits is 34992, while the sum is 38.

The square root of 993944 is about 996.9674016737. The cubic root of 993944 is about 99.7977244552.

The spelling of 993944 in words is "nine hundred ninety-three thousand, nine hundred forty-four".