998822299 has 4 divisors (see below), whose sum is σ = 998885736. Its totient is φ = 998758864.

The previous prime is 998822273. The next prime is 998822309. The reversal of 998822299 is 992228899.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 992228899 = 641 ⋅1547939.

It is a cyclic number.

It is not a de Polignac number, because 998822299 - 2¹⁹ = 998298011 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (998822599) 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, 11832 + ... + 46234.

It is an arithmetic number, because the mean of its divisors is an integer number (249721434).

Almost surely, 2^998822299 is an apocalyptic number.

998822299 is a deficient number, since it is larger than the sum of its proper divisors (63437).

998822299 is a wasteful number, since it uses less digits than its factorization.

998822299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63436.

The product of its digits is 3359232, while the sum is 58.

The square root of 998822299 is about 31604.1500281213. The cubic root of 998822299 is about 999.6072787902.

The spelling of 998822299 in words is "nine hundred ninety-eight million, eight hundred twenty-two thousand, two hundred ninety-nine".