39982001 has 2 divisors, whose sum is σ = 39982002. Its totient is φ = 39982000.

The previous prime is 39981983. The next prime is 39982003. The reversal of 39982001 is 10028993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39942400 + 39601 = 6320^2 + 199^2 .

It is a cyclic number.

It is not a de Polignac number, because 39982001 - 2¹⁴ = 39965617 is a prime.

Together with 39982003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (39982003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19991000 + 19991001.

It is an arithmetic number, because the mean of its divisors is an integer number (19991001).

Almost surely, 2^39982001 is an apocalyptic number.

It is an amenable number.

39982001 is a deficient number, since it is larger than the sum of its proper divisors (1).

39982001 is an equidigital number, since it uses as much as digits as its factorization.

39982001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 39982001 is about 6323.1322143381. The cubic root of 39982001 is about 341.9438852109.

The spelling of 39982001 in words is "thirty-nine million, nine hundred eighty-two thousand, one".