7405944 has 64 divisors (see below), whose sum is σ = 22794240. Its totient is φ = 1952640.

The previous prime is 7405943. The next prime is 7405961. The reversal of 7405944 is 4495047.

It is a happy number.

It is a super-2 number, since 2×7405944² = 109696013062272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7405943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 489 + ... + 3879.

It is an arithmetic number, because the mean of its divisors is an integer number (356160).

Almost surely, 2^7405944 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 7405944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11397120).

7405944 is an abundant number, since it is smaller than the sum of its proper divisors (15388296).

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

7405944 is a wasteful number, since it uses less digits than its factorization.

7405944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3420 (or 3416 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 7405944 is about 2721.3864113720. The cubic root of 7405944 is about 194.9216779477.

The spelling of 7405944 in words is "seven million, four hundred five thousand, nine hundred forty-four".