998823395 has 4 divisors (see below), whose sum is σ = 1198588080. Its totient is φ = 799058712.

The previous prime is 998823391. The next prime is 998823403. The reversal of 998823395 is 593328899.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 593328899 = 193 ⋅3074243.

It is a cyclic number.

It is not a de Polignac number, because 998823395 - 2² = 998823391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 998823395.

It is not an unprimeable number, because it can be changed into a prime (998823391) 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 3 ways as a sum of consecutive naturals, for example, 99882335 + ... + 99882344.

It is an arithmetic number, because the mean of its divisors is an integer number (299647020).

Almost surely, 2^998823395 is an apocalyptic number.

998823395 is a deficient number, since it is larger than the sum of its proper divisors (199764685).

998823395 is a wasteful number, since it uses less digits than its factorization.

998823395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199764684.

The product of its digits is 4199040, while the sum is 56.

The square root of 998823395 is about 31604.1673676115. The cubic root of 998823395 is about 999.6076444106.

The spelling of 998823395 in words is "nine hundred ninety-eight million, eight hundred twenty-three thousand, three hundred ninety-five".