39999999999899 has 2 divisors, whose sum is σ = 39999999999900. Its totient is φ = 39999999999898.

The previous prime is 39999999999881. The next prime is 39999999999913. The reversal of 39999999999899 is 99899999999993.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 39999999999899 - 2⁸ = 39999999999643 is a prime.

It is not a weakly prime, because it can be changed into another prime (39999999998899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19999999999949 + 19999999999950.

It is an arithmetic number, because the mean of its divisors is an integer number (19999999999950).

Almost surely, 2^{39999999999899} is an apocalyptic number.

39999999999899 is a deficient number, since it is larger than the sum of its proper divisors (1).

39999999999899 is an equidigital number, since it uses as much as digits as its factorization.

39999999999899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6778308875544, while the sum is 119.

The spelling of 39999999999899 in words is "thirty-nine trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, eight hundred ninety-nine".