39984899 has 2 divisors, whose sum is σ = 39984900. Its totient is φ = 39984898.

The previous prime is 39984859. The next prime is 39984907. The reversal of 39984899 is 99848993.

It is a strong prime.

It is an emirp because it is prime and its reverse (99848993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39984899 - 2²⁰ = 38936323 is a prime.

It is not a weakly prime, because it can be changed into another prime (39984839) 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, 19992449 + 19992450.

It is an arithmetic number, because the mean of its divisors is an integer number (19992450).

Almost surely, 2^39984899 is an apocalyptic number.

39984899 is a deficient number, since it is larger than the sum of its proper divisors (1).

39984899 is an equidigital number, since it uses as much as digits as its factorization.

39984899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5038848, while the sum is 59.

The square root of 39984899 is about 6323.3613687658. The cubic root of 39984899 is about 341.9521466737.

The spelling of 39984899 in words is "thirty-nine million, nine hundred eighty-four thousand, eight hundred ninety-nine".