43497985 has 16 divisors (see below), whose sum is σ = 55423872. Its totient is φ = 32659200.

The previous prime is 43497919. The next prime is 43498027. The reversal of 43497985 is 58979434.

It is not a de Polignac number, because 43497985 - 2²³ = 35109377 is a prime.

It is a Duffinian 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, 53230 + ... + 54040.

It is an arithmetic number, because the mean of its divisors is an integer number (3463992).

Almost surely, 2^43497985 is an apocalyptic number.

It is an amenable number.

43497985 is a deficient number, since it is larger than the sum of its proper divisors (11925887).

43497985 is a wasteful number, since it uses less digits than its factorization.

43497985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464.

The product of its digits is 1088640, while the sum is 49.

The square root of 43497985 is about 6595.3002206116. The cubic root of 43497985 is about 351.6870523685.

The spelling of 43497985 in words is "forty-three million, four hundred ninety-seven thousand, nine hundred eighty-five".