43861972 has 48 divisors (see below), whose sum is σ = 101340288. Its totient is φ = 16081920.

The previous prime is 43861969. The next prime is 43862003. The reversal of 43861972 is 27916834.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1048 + ... + 9424.

It is an arithmetic number, because the mean of its divisors is an integer number (2111256).

Almost surely, 2^43861972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43861972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50670144).

43861972 is an abundant number, since it is smaller than the sum of its proper divisors (57478316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43861972 is a wasteful number, since it uses less digits than its factorization.

43861972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8416 (or 8414 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 43861972 is about 6622.8371563855. The cubic root of 43861972 is about 352.6652900859.

The spelling of 43861972 in words is "forty-three million, eight hundred sixty-one thousand, nine hundred seventy-two".