998739937899 has 24 divisors (see below), whose sum is σ = 1573810376112. Its totient is φ = 605282181120.

The previous prime is 998739937861. The next prime is 998739937901.

998739937899 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 998739937899 - 2¹² = 998739933803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (998739937859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5056747 + ... + 5250539.

It is an arithmetic number, because the mean of its divisors is an integer number (65575432338).

Almost surely, 2^998739937899 is an apocalyptic number.

998739937899 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

998739937899 is a deficient number, since it is larger than the sum of its proper divisors (575070438213).

998739937899 is a wasteful number, since it uses less digits than its factorization.

998739937899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245867 (or 245864 counting only the distinct ones).

The product of its digits is 14999390784, while the sum is 90.

The spelling of 998739937899 in words is "nine hundred ninety-eight billion, seven hundred thirty-nine million, nine hundred thirty-seven thousand, eight hundred ninety-nine".