43720873 has 8 divisors (see below), whose sum is σ = 50092160. Its totient is φ = 37380960.

The previous prime is 43720847. The next prime is 43720927. The reversal of 43720873 is 37802734.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43720873 - 2⁵ = 43720841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43720823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4773 + ... + 10498.

It is an arithmetic number, because the mean of its divisors is an integer number (6261520).

Almost surely, 2^43720873 is an apocalyptic number.

It is an amenable number.

43720873 is a deficient number, since it is larger than the sum of its proper divisors (6371287).

43720873 is a wasteful number, since it uses less digits than its factorization.

43720873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15687.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 43720873 is about 6612.1761168317. The cubic root of 43720873 is about 352.2867224167.

The spelling of 43720873 in words is "forty-three million, seven hundred twenty thousand, eight hundred seventy-three".