998363899 has 16 divisors (see below), whose sum is σ = 1103304384. Its totient is φ = 897523200.

The previous prime is 998363887. The next prime is 998363903.

998363899 is nontrivially palindromic in base 10.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998363899 is a prime.

It is a super-3 number, since 3×998363899³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 998363899.

It is not an unprimeable number, because it can be changed into a prime (998363699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394759 + ... + 397279.

It is an arithmetic number, because the mean of its divisors is an integer number (68956524).

Almost surely, 2^998363899 is an apocalyptic number.

998363899 is a deficient number, since it is larger than the sum of its proper divisors (104940485).

998363899 is a wasteful number, since it uses less digits than its factorization.

998363899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318.

The product of its digits is 22674816, while the sum is 64.

The square root of 998363899 is about 31596.8969837229. The cubic root of 998363899 is about 999.4543353042.

The spelling of 998363899 in words is "nine hundred ninety-eight million, three hundred sixty-three thousand, eight hundred ninety-nine".