43990172 has 6 divisors (see below), whose sum is σ = 76982808. Its totient is φ = 21995084.

The previous prime is 43990153. The next prime is 43990181. The reversal of 43990172 is 27109934.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5498768 + ... + 5498775.

It is an arithmetic number, because the mean of its divisors is an integer number (12830468).

Almost surely, 2^43990172 is an apocalyptic number.

It is an amenable number.

43990172 is a deficient number, since it is larger than the sum of its proper divisors (32992636).

43990172 is a wasteful number, since it uses less digits than its factorization.

43990172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10997547 (or 10997545 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 43990172 is about 6632.5087259649. The cubic root of 43990172 is about 353.0085465273.

The spelling of 43990172 in words is "forty-three million, nine hundred ninety thousand, one hundred seventy-two".