7440444 has 48 divisors (see below), whose sum is σ = 21047040. Its totient is φ = 2254320.

The previous prime is 7440437. The next prime is 7440467. The reversal of 7440444 is 4440447.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1944 + ... + 4319.

It is an arithmetic number, because the mean of its divisors is an integer number (438480).

Almost surely, 2^7440444 is an apocalyptic number.

It is an amenable number.

7440444 is an abundant number, since it is smaller than the sum of its proper divisors (13606596).

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

7440444 is a wasteful number, since it uses less digits than its factorization.

7440444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6287 (or 6279 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 27.

The square root of 7440444 is about 2727.7177273318. The cubic root of 7440444 is about 195.2238848651.

7440444 divided by its sum of digits (27) gives a palindrome (275572).

The spelling of 7440444 in words is "seven million, four hundred forty thousand, four hundred forty-four".