43944474 has 64 divisors (see below), whose sum is σ = 103910400. Its totient is φ = 12383280.

The previous prime is 43944469. The next prime is 43944479. The reversal of 43944474 is 47444934.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (43944469) and next prime (43944479).

It is a super-2 number, since 2×43944474² = 3862233590273352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43944479) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 269517 + ... + 269679.

It is an arithmetic number, because the mean of its divisors is an integer number (1623600).

Almost surely, 2^43944474 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43944474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51955200).

43944474 is an abundant number, since it is smaller than the sum of its proper divisors (59965926).

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

43944474 is a wasteful number, since it uses less digits than its factorization.

43944474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320 (or 306 counting only the distinct ones).

The product of its digits is 193536, while the sum is 39.

The square root of 43944474 is about 6629.0628296917. The cubic root of 43944474 is about 352.8862663824.

The spelling of 43944474 in words is "forty-three million, nine hundred forty-four thousand, four hundred seventy-four".