43944473 has 24 divisors (see below), whose sum is σ = 50397120. Its totient is φ = 38188800.

The previous prime is 43944469. The next prime is 43944479. The reversal of 43944473 is 37444934.

It is not a de Polignac number, because 43944473 - 2² = 43944469 is a prime.

It is a super-2 number, since 2×43944473² = 3862233414495458, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43944479) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 290948 + ... + 291098.

It is an arithmetic number, because the mean of its divisors is an integer number (2099880).

Almost surely, 2^43944473 is an apocalyptic number.

It is an amenable number.

43944473 is a deficient number, since it is larger than the sum of its proper divisors (6452647).

43944473 is a wasteful number, since it uses less digits than its factorization.

43944473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 240 counting only the distinct ones).

The product of its digits is 145152, while the sum is 38.

The square root of 43944473 is about 6629.0627542662. The cubic root of 43944473 is about 352.8862637057.

The spelling of 43944473 in words is "forty-three million, nine hundred forty-four thousand, four hundred seventy-three".