998299992899 has 4 divisors (see below), whose sum is σ = 1089054537720. Its totient is φ = 907545448080.

The previous prime is 998299992889. The next prime is 998299992931.

It is a happy number.

998299992899 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 998299992899 - 2⁴ = 998299992883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (998299992869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45377272394 + ... + 45377272415.

It is an arithmetic number, because the mean of its divisors is an integer number (272263634430).

Almost surely, 2^998299992899 is an apocalyptic number.

998299992899 is a deficient number, since it is larger than the sum of its proper divisors (90754544821).

998299992899 is a wasteful number, since it uses less digits than its factorization.

998299992899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90754544820.

The product of its digits is 11019960576, while the sum is 92.

The spelling of 998299992899 in words is "nine hundred ninety-eight billion, two hundred ninety-nine million, nine hundred ninety-two thousand, eight hundred ninety-nine".