43997982 has 32 divisors (see below), whose sum is σ = 102624000. Its totient is φ = 12570264.

The previous prime is 43997971. The next prime is 43998001. The reversal of 43997982 is 28979934.

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, 8632 + ... + 12747.

It is an arithmetic number, because the mean of its divisors is an integer number (3207000).

Almost surely, 2^43997982 is an apocalyptic number.

43997982 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

43997982 is an abundant number, since it is smaller than the sum of its proper divisors (58626018).

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

43997982 is a wasteful number, since it uses less digits than its factorization.

43997982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21405 (or 21391 counting only the distinct ones).

The product of its digits is 979776, while the sum is 51.

The square root of 43997982 is about 6633.0974664933. The cubic root of 43997982 is about 353.0294362964.

The spelling of 43997982 in words is "forty-three million, nine hundred ninety-seven thousand, nine hundred eighty-two".