39982005 has 56 divisors (see below), whose sum is σ = 82263552. Its totient is φ = 18265824.

The previous prime is 39982003. The next prime is 39982037. The reversal of 39982005 is 50028993.

It is not a de Polignac number, because 39982005 - 2¹ = 39982003 is a prime.

It is a congruent number.

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 55 ways as a sum of consecutive naturals, for example, 24732 + ... + 26298.

It is an arithmetic number, because the mean of its divisors is an integer number (1468992).

Almost surely, 2^39982005 is an apocalyptic number.

39982005 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

39982005 is an abundant number, since it is smaller than the sum of its proper divisors (42281547).

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

39982005 is an equidigital number, since it uses as much as digits as its factorization.

39982005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597 (or 1582 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 39982005 is about 6323.1325306370. The cubic root of 39982005 is about 341.9438966142.

The spelling of 39982005 in words is "thirty-nine million, nine hundred eighty-two thousand, five".