39982513 has 2 divisors, whose sum is σ = 39982514. Its totient is φ = 39982512.

The previous prime is 39982499. The next prime is 39982531. The reversal of 39982513 is 31528993.

Together with next prime (39982531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37051569 + 2930944 = 6087^2 + 1712^2 .

It is an emirp because it is prime and its reverse (31528993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39982513 - 2⁹ = 39982001 is a prime.

It is not a weakly prime, because it can be changed into another prime (39982573) 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, 19991256 + 19991257.

It is an arithmetic number, because the mean of its divisors is an integer number (19991257).

Almost surely, 2^39982513 is an apocalyptic number.

It is an amenable number.

39982513 is a deficient number, since it is larger than the sum of its proper divisors (1).

39982513 is an equidigital number, since it uses as much as digits as its factorization.

39982513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 40.

The square root of 39982513 is about 6323.1727004724. The cubic root of 39982513 is about 341.9453448221.

The spelling of 39982513 in words is "thirty-nine million, nine hundred eighty-two thousand, five hundred thirteen".