43994871 has 6 divisors (see below), whose sum is σ = 63548160. Its totient is φ = 29329908.

The previous prime is 43994857. The next prime is 43994879. The reversal of 43994871 is 17849934.

It is not a de Polignac number, because 43994871 - 2¹⁰ = 43993847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43994879) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2444151 + ... + 2444168.

It is an arithmetic number, because the mean of its divisors is an integer number (10591360).

Almost surely, 2^43994871 is an apocalyptic number.

43994871 is a deficient number, since it is larger than the sum of its proper divisors (19553289).

43994871 is a wasteful number, since it uses less digits than its factorization.

43994871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4888325 (or 4888322 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 43994871 is about 6632.8629565219. The cubic root of 43994871 is about 353.0211154567.

The spelling of 43994871 in words is "forty-three million, nine hundred ninety-four thousand, eight hundred seventy-one".