43945489 has 8 divisors (see below), whose sum is σ = 50912000. Its totient is φ = 37151136.

The previous prime is 43945487. The next prime is 43945511. The reversal of 43945489 is 98454934.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43945489 - 2¹ = 43945487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43945487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42489 + ... + 43510.

It is an arithmetic number, because the mean of its divisors is an integer number (6364000).

Almost surely, 2^43945489 is an apocalyptic number.

It is an amenable number.

43945489 is a deficient number, since it is larger than the sum of its proper divisors (6966511).

43945489 is an equidigital number, since it uses as much as digits as its factorization.

43945489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86079.

The product of its digits is 622080, while the sum is 46.

The square root of 43945489 is about 6629.1393860742. The cubic root of 43945489 is about 352.8889832717. Note that the first 3 decimals are identical.

It can be divided in two parts, 4 and 3945489, that added together give a palindrome (3945493).

The spelling of 43945489 in words is "forty-three million, nine hundred forty-five thousand, four hundred eighty-nine".