43449147 has 24 divisors (see below), whose sum is σ = 71934720. Its totient is φ = 24755760.

The previous prime is 43449121. The next prime is 43449151. The reversal of 43449147 is 74194434.

It is not a de Polignac number, because 43449147 - 2⁶ = 43449083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43449187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26872 + ... + 28442.

It is an arithmetic number, because the mean of its divisors is an integer number (2997280).

Almost surely, 2^43449147 is an apocalyptic number.

43449147 is a deficient number, since it is larger than the sum of its proper divisors (28485573).

43449147 is a wasteful number, since it uses less digits than its factorization.

43449147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023 (or 2020 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 43449147 is about 6591.5966957938. The cubic root of 43449147 is about 351.5553824811. Note that the first 3 decimals are identical.

The spelling of 43449147 in words is "forty-three million, four hundred forty-nine thousand, one hundred forty-seven".