43399944 has 48 divisors (see below), whose sum is σ = 134334720. Its totient is φ = 12399840.

The previous prime is 43399931. The next prime is 43399973. The reversal of 43399944 is 44999334.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 43399944.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42552 + ... + 43559.

It is an arithmetic number, because the mean of its divisors is an integer number (2798640).

Almost surely, 2^43399944 is an apocalyptic number.

It is an amenable number.

43399944 is an abundant number, since it is smaller than the sum of its proper divisors (90934776).

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

43399944 is a wasteful number, since it uses less digits than its factorization.

43399944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86130 (or 86123 counting only the distinct ones).

The product of its digits is 419904, while the sum is 45.

The square root of 43399944 is about 6587.8633865617. The cubic root of 43399944 is about 351.4226287202.

The spelling of 43399944 in words is "forty-three million, three hundred ninety-nine thousand, nine hundred forty-four".