998729927899 has 32 divisors (see below), whose sum is σ = 1154262700800. Its totient is φ = 855530309760.

The previous prime is 998729927873. The next prime is 998729927911.

998729927899 is nontrivially palindromic in base 10.

998729927899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998729927899 is a prime.

It is a super-2 number, since 2×998729927899² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (998729927869) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16828572 + ... + 16887814.

It is an arithmetic number, because the mean of its divisors is an integer number (36070709400).

Almost surely, 2^998729927899 is an apocalyptic number.

998729927899 is a deficient number, since it is larger than the sum of its proper divisors (155532772901).

998729927899 is a wasteful number, since it uses less digits than its factorization.

998729927899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60555.

The product of its digits is 6666395904, while the sum is 88.

The spelling of 998729927899 in words is "nine hundred ninety-eight billion, seven hundred twenty-nine million, nine hundred twenty-seven thousand, eight hundred ninety-nine".