43999971 has 8 divisors (see below), whose sum is σ = 59628624. Its totient is φ = 28852320.

The previous prime is 43999957. The next prime is 43999981. The reversal of 43999971 is 17999934.

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

It is not a de Polignac number, because 43999971 - 2²³ = 35611363 is a prime.

It is a super-3 number, since 3×43999971³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (43999981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120036 + ... + 120401.

It is an arithmetic number, because the mean of its divisors is an integer number (7453578).

Almost surely, 2^43999971 is an apocalyptic number.

43999971 is a deficient number, since it is larger than the sum of its proper divisors (15628653).

43999971 is a wasteful number, since it uses less digits than its factorization.

43999971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240501.

The product of its digits is 551124, while the sum is 51.

The square root of 43999971 is about 6633.2473947532. The cubic root of 43999971 is about 353.0347559719.

The spelling of 43999971 in words is "forty-three million, nine hundred ninety-nine thousand, nine hundred seventy-one".