43908489 has 6 divisors (see below), whose sum is σ = 63423386. Its totient is φ = 29272320.

The previous prime is 43908479. The next prime is 43908503. The reversal of 43908489 is 98480934.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 31270464 + 12638025 = 5592^2 + 3555^2 .

It is not a de Polignac number, because 43908489 - 2⁵ = 43908457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43908419) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2439352 + ... + 2439369.

Almost surely, 2^43908489 is an apocalyptic number.

It is an amenable number.

43908489 is a deficient number, since it is larger than the sum of its proper divisors (19514897).

43908489 is a wasteful number, since it uses less digits than its factorization.

43908489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4878727 (or 4878724 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 43908489 is about 6626.3480892570. The cubic root of 43908489 is about 352.7899169145.

The spelling of 43908489 in words is "forty-three million, nine hundred eight thousand, four hundred eighty-nine".