744438 has 16 divisors (see below), whose sum is σ = 1517616. Its totient is φ = 243360.

The previous prime is 744431. The next prime is 744451. The reversal of 744438 is 834447.

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 744438.

It is not an unprimeable number, because it can be changed into a prime (744431) by changing a digit.

744438 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 7 ways as a sum of consecutive naturals, for example, 853 + ... + 1488.

It is an arithmetic number, because the mean of its divisors is an integer number (94851).

2⁷⁴⁴⁴³⁸ is an apocalyptic number.

744438 is an abundant number, since it is smaller than the sum of its proper divisors (773178).

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

744438 is a wasteful number, since it uses less digits than its factorization.

744438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399.

The product of its digits is 10752, while the sum is 30.

The square root of 744438 is about 862.8082058024. The cubic root of 744438 is about 90.6308760360.

Subtracting 744438 from its reverse (834447), we obtain a palindrome (90009).

The spelling of 744438 in words is "seven hundred forty-four thousand, four hundred thirty-eight".