998873 has 4 divisors (see below), whose sum is σ = 1001088. Its totient is φ = 996660.

The previous prime is 998861. The next prime is 998897. The reversal of 998873 is 378899.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 378899 = 563 ⋅673.

It is a cyclic number.

It is not a de Polignac number, because 998873 - 2⁴ = 998857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998813) 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, 161 + ... + 1422.

It is an arithmetic number, because the mean of its divisors is an integer number (250272).

2⁹⁹⁸⁸⁷³ is an apocalyptic number.

It is an amenable number.

998873 is a deficient number, since it is larger than the sum of its proper divisors (2215).

998873 is a wasteful number, since it uses less digits than its factorization.

998873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2214.

The product of its digits is 108864, while the sum is 44.

The square root of 998873 is about 999.4363411443. The cubic root of 998873 is about 99.9624192119.

The spelling of 998873 in words is "nine hundred ninety-eight thousand, eight hundred seventy-three".