43859972 has 12 divisors (see below), whose sum is σ = 82659276. Its totient is φ = 20243040.

The previous prime is 43859971. The next prime is 43859987. The reversal of 43859972 is 27995834.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20666116 + 23193856 = 4546^2 + 4816^2 .

It is not an unprimeable number, because it can be changed into a prime (43859971) 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, 421679 + ... + 421782.

It is an arithmetic number, because the mean of its divisors is an integer number (6888273).

Almost surely, 2^43859972 is an apocalyptic number.

It is an amenable number.

43859972 is a deficient number, since it is larger than the sum of its proper divisors (38799304).

43859972 is a wasteful number, since it uses less digits than its factorization.

43859972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843478 (or 843476 counting only the distinct ones).

The product of its digits is 544320, while the sum is 47.

The square root of 43859972 is about 6622.6861619739. The cubic root of 43859972 is about 352.6599297759.

The spelling of 43859972 in words is "forty-three million, eight hundred fifty-nine thousand, nine hundred seventy-two".