4005891982 has 12 divisors (see below), whose sum is σ = 6208927128. Its totient is φ = 1938333900.

The previous prime is 4005891977. The next prime is 4005891983. The reversal of 4005891982 is 2891985004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4005891983) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1040194 + ... + 1044037.

It is an arithmetic number, because the mean of its divisors is an integer number (517410594).

Almost surely, 2^4005891982 is an apocalyptic number.

4005891982 is a deficient number, since it is larger than the sum of its proper divisors (2203035146).

4005891982 is a wasteful number, since it uses less digits than its factorization.

4005891982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2084295 (or 2084264 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 4005891982 is about 63292.1162705119. The cubic root of 4005891982 is about 1588.1800811266.

The spelling of 4005891982 in words is "four billion, five million, eight hundred ninety-one thousand, nine hundred eighty-two".