993444 has 12 divisors (see below), whose sum is σ = 2318064. Its totient is φ = 331144.

The previous prime is 993437. The next prime is 993451. The reversal of 993444 is 444399.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (993437) and next prime (993451).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×993444² = 1973861962272, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 993444.

It is an unprimeable number.

993444 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41382 + ... + 41405.

It is an arithmetic number, because the mean of its divisors is an integer number (193172).

2⁹⁹³⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

993444 is an abundant number, since it is smaller than the sum of its proper divisors (1324620).

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

993444 is a wasteful number, since it uses less digits than its factorization.

993444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82794 (or 82792 counting only the distinct ones).

The product of its digits is 15552, while the sum is 33.

The square root of 993444 is about 996.7166096740. The cubic root of 993444 is about 99.7809873514.

The spelling of 993444 in words is "nine hundred ninety-three thousand, four hundred forty-four".