43982081 has 24 divisors (see below), whose sum is σ = 52967520. Its totient is φ = 36192000.

The previous prime is 43982063. The next prime is 43982089. The reversal of 43982081 is 18028934.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-43982081 is a prime.

It is a super-2 number, since 2×43982081² = 3868846898181122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43982089) 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, 109481 + ... + 109881.

It is an arithmetic number, because the mean of its divisors is an integer number (2206980).

Almost surely, 2^43982081 is an apocalyptic number.

It is an amenable number.

43982081 is a deficient number, since it is larger than the sum of its proper divisors (8985439).

43982081 is a wasteful number, since it uses less digits than its factorization.

43982081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497 (or 484 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 43982081 is about 6631.8987477192. The cubic root of 43982081 is about 352.9869025467.

The spelling of 43982081 in words is "forty-three million, nine hundred eighty-two thousand, eighty-one".