43638485 has 16 divisors (see below), whose sum is σ = 58067712. Its totient is φ = 31214400.

The previous prime is 43638479. The next prime is 43638493. The reversal of 43638485 is 58483634.

It is a happy number.

It is not a de Polignac number, because 43638485 - 2¹² = 43634389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3149 + ... + 9858.

It is an arithmetic number, because the mean of its divisors is an integer number (3629232).

Almost surely, 2^43638485 is an apocalyptic number.

It is an amenable number.

43638485 is a deficient number, since it is larger than the sum of its proper divisors (14429227).

43638485 is a wasteful number, since it uses less digits than its factorization.

43638485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13084.

The product of its digits is 276480, while the sum is 41.

The square root of 43638485 is about 6605.9431574908. The cubic root of 43638485 is about 352.0652992019.

The spelling of 43638485 in words is "forty-three million, six hundred thirty-eight thousand, four hundred eighty-five".