43985385 has 24 divisors (see below), whose sum is σ = 77538240. Its totient is φ = 23059872.

The previous prime is 43985377. The next prime is 43985419. The reversal of 43985385 is 58358934.

It is a happy number.

It is not a de Polignac number, because 43985385 - 2³ = 43985377 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 43985385.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5629 + ... + 10938.

It is an arithmetic number, because the mean of its divisors is an integer number (3230760).

Almost surely, 2^43985385 is an apocalyptic number.

43985385 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

43985385 is a deficient number, since it is larger than the sum of its proper divisors (33552855).

43985385 is a wasteful number, since it uses less digits than its factorization.

43985385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16637 (or 16634 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 43985385 is about 6632.1478421398. The cubic root of 43985385 is about 352.9957412942.

The spelling of 43985385 in words is "forty-three million, nine hundred eighty-five thousand, three hundred eighty-five".