998229905 has 8 divisors (see below), whose sum is σ = 1198075200. Its totient is φ = 798451056.

The previous prime is 998229899. The next prime is 998229949. The reversal of 998229905 is 509922899.

998229905 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 998229905 - 2²⁰ = 997181329 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26726 + ... + 52064.

It is an arithmetic number, because the mean of its divisors is an integer number (149759400).

Almost surely, 2^998229905 is an apocalyptic number.

It is an amenable number.

998229905 is a deficient number, since it is larger than the sum of its proper divisors (199845295).

998229905 is a wasteful number, since it uses less digits than its factorization.

998229905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33223.

The product of its (nonzero) digits is 1049760, while the sum is 53.

The square root of 998229905 is about 31594.7765461318. The cubic root of 998229905 is about 999.4096198532.

The spelling of 998229905 in words is "nine hundred ninety-eight million, two hundred twenty-nine thousand, nine hundred five".