998022873 has 8 divisors (see below), whose sum is σ = 1339510336. Its totient is φ = 660942000.

The previous prime is 998022871. The next prime is 998022889. The reversal of 998022873 is 378220899.

It is a happy number.

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

It is not a de Polignac number, because 998022873 - 2¹ = 998022871 is a prime.

It is the 31592-nd Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (998022871) by changing a digit.

It is a nontrivial repunit in base 31591.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1101118 + ... + 1102023.

It is an arithmetic number, because the mean of its divisors is an integer number (167438792).

Almost surely, 2^998022873 is an apocalyptic number.

It is an amenable number.

998022873 is a deficient number, since it is larger than the sum of its proper divisors (341487463).

998022873 is a wasteful number, since it uses less digits than its factorization.

998022873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2203295.

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 998022873 is about 31591.5000118703. The cubic root of 998022873 is about 999.3405228522.

The spelling of 998022873 in words is "nine hundred ninety-eight million, twenty-two thousand, eight hundred seventy-three".