499999999939 has 16 divisors (see below), whose sum is σ = 556838310240. Its totient is φ = 445092693760.

The previous prime is 499999999901. The next prime is 499999999943. The reversal of 499999999939 is 939999999994.

It is not a de Polignac number, because 499999999939 - 2⁹ = 499999999427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499999999979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 545722 + ... + 1139215.

It is an arithmetic number, because the mean of its divisors is an integer number (34802394390).

Almost surely, 2^499999999939 is an apocalyptic number.

499999999939 is a deficient number, since it is larger than the sum of its proper divisors (56838310301).

499999999939 is a wasteful number, since it uses less digits than its factorization.

499999999939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1685510.

The product of its digits is 41841412812, while the sum is 97.

The spelling of 499999999939 in words is "four hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred thirty-nine".