998825009 has 8 divisors (see below), whose sum is σ = 1229323200. Its totient is φ = 790279056.

The previous prime is 998824999. The next prime is 998825033. The reversal of 998825009 is 900528899.

998825009 is digitally balanced in base 2, 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 not a de Polignac number, because 998825009 - 2¹⁶ = 998759473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (998825039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5487959 + ... + 5488140.

It is an arithmetic number, because the mean of its divisors is an integer number (153665400).

Almost surely, 2^998825009 is an apocalyptic number.

It is an amenable number.

998825009 is a deficient number, since it is larger than the sum of its proper divisors (230498191).

998825009 is a wasteful number, since it uses less digits than its factorization.

998825009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10976119.

The product of its (nonzero) digits is 466560, while the sum is 50.

The square root of 998825009 is about 31604.1929022084. The cubic root of 998825009 is about 999.6081828327.

The spelling of 998825009 in words is "nine hundred ninety-eight million, eight hundred twenty-five thousand, nine".