442038744 has 96 divisors (see below), whose sum is σ = 1384830720. Its totient is φ = 124763328.

The previous prime is 442038719. The next prime is 442038761. The reversal of 442038744 is 447830244.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 442038699 and 442038708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36549 + ... + 47115.

It is an arithmetic number, because the mean of its divisors is an integer number (14425320).

Almost surely, 2^442038744 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 442038744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (692415360).

442038744 is an abundant number, since it is smaller than the sum of its proper divisors (942791976).

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

442038744 is a wasteful number, since it uses less digits than its factorization.

442038744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10669 (or 10662 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 36.

The square root of 442038744 is about 21024.7174535117. The cubic root of 442038744 is about 761.7634167477.

Adding to 442038744 its reverse (447830244), we get a palindrome (889868988).

The spelling of 442038744 in words is "four hundred forty-two million, thirty-eight thousand, seven hundred forty-four".