43939873 has 8 divisors (see below), whose sum is σ = 44930592. Its totient is φ = 42959136.

The previous prime is 43939859. The next prime is 43939897. The reversal of 43939873 is 37893934.

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 43939873 - 2¹⁷ = 43808801 is a prime.

It is a super-2 number, since 2×43939873² = 3861424878512258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43939813) 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, 6786 + ... + 11572.

It is an arithmetic number, because the mean of its divisors is an integer number (5616324).

Almost surely, 2^43939873 is an apocalyptic number.

It is an amenable number.

43939873 is a deficient number, since it is larger than the sum of its proper divisors (990719).

43939873 is a wasteful number, since it uses less digits than its factorization.

43939873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4991.

The product of its digits is 489888, while the sum is 46.

The square root of 43939873 is about 6628.7157881448. The cubic root of 43939873 is about 352.8739501856.

The spelling of 43939873 in words is "forty-three million, nine hundred thirty-nine thousand, eight hundred seventy-three".