43994385 has 48 divisors (see below), whose sum is σ = 81544320. Its totient is φ = 21864960.

The previous prime is 43994347. The next prime is 43994393. The reversal of 43994385 is 58349934.

It is a happy number.

43994385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43994385 - 2⁷ = 43994257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 43994385.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 99996 + ... + 100434.

It is an arithmetic number, because the mean of its divisors is an integer number (1698840).

Almost surely, 2^43994385 is an apocalyptic number.

43994385 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

43994385 is a deficient number, since it is larger than the sum of its proper divisors (37549935).

43994385 is a wasteful number, since it uses less digits than its factorization.

43994385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598 (or 595 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 43994385 is about 6632.8263206570. The cubic root of 43994385 is about 353.0198155408.

The spelling of 43994385 in words is "forty-three million, nine hundred ninety-four thousand, three hundred eighty-five".