43997873 has 4 divisors (see below), whose sum is σ = 45910848. Its totient is φ = 42084900.

The previous prime is 43997869. The next prime is 43997881. The reversal of 43997873 is 37879934.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43997873 - 2² = 43997869 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43997803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 956453 + ... + 956498.

It is an arithmetic number, because the mean of its divisors is an integer number (11477712).

Almost surely, 2^43997873 is an apocalyptic number.

It is an amenable number.

43997873 is a deficient number, since it is larger than the sum of its proper divisors (1912975).

43997873 is a wasteful number, since it uses less digits than its factorization.

43997873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1912974.

The product of its digits is 1143072, while the sum is 50.

The square root of 43997873 is about 6633.0892501157. The cubic root of 43997873 is about 353.0291447660.

The spelling of 43997873 in words is "forty-three million, nine hundred ninety-seven thousand, eight hundred seventy-three".