39982000 has 40 divisors (see below), whose sum is σ = 96681312. Its totient is φ = 15992000.

The previous prime is 39981983. The next prime is 39982001. The reversal of 39982000 is 28993.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (39982001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7996 + ... + 11995.

Almost surely, 2^39982000 is an apocalyptic number.

It is an amenable number.

39982000 is an abundant number, since it is smaller than the sum of its proper divisors (56699312).

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

39982000 is a wasteful number, since it uses less digits than its factorization.

39982000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20014 (or 19998 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 39982000 is about 6323.1321352633. The cubic root of 39982000 is about 341.9438823601.

The spelling of 39982000 in words is "thirty-nine million, nine hundred eighty-two thousand".