997444 has 24 divisors (see below), whose sum is σ = 2038400. Its totient is φ = 426888.

The previous prime is 997439. The next prime is 997453. The reversal of 997444 is 444799.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1009 + ... + 1735.

2⁹⁹⁷⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 997444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1019200).

997444 is an abundant number, since it is smaller than the sum of its proper divisors (1040956).

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

997444 is a wasteful number, since it uses less digits than its factorization.

997444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752 (or 736 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 997444 is about 998.7211823127. The cubic root of 997444 is about 99.9147273063.

It can be divided in two parts, 997 and 444, that added together give a palindrome (1441).

The spelling of 997444 in words is "nine hundred ninety-seven thousand, four hundred forty-four".