43990173 has 12 divisors (see below), whose sum is σ = 63629280. Its totient is φ = 29286216.

The previous prime is 43990153. The next prime is 43990181. The reversal of 43990173 is 37109934.

It is not a de Polignac number, because 43990173 - 2⁹ = 43989661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43990153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4438 + ... + 10376.

It is an arithmetic number, because the mean of its divisors is an integer number (5302440).

Almost surely, 2^43990173 is an apocalyptic number.

It is an amenable number.

43990173 is a deficient number, since it is larger than the sum of its proper divisors (19639107).

43990173 is a wasteful number, since it uses less digits than its factorization.

43990173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6768 (or 6765 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 43990173 is about 6632.5088013511. The cubic root of 43990173 is about 353.0085492022.

The spelling of 43990173 in words is "forty-three million, nine hundred ninety thousand, one hundred seventy-three".