998854 has 8 divisors (see below), whose sum is σ = 1509480. Its totient is φ = 495696.

The previous prime is 998843. The next prime is 998857. The reversal of 998854 is 458899.

998854 = T₄₀₂ + T₄₀₃ + ... + T₄₁₃.

It is a happy number.

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

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 998854.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1519 + ... + 2074.

It is an arithmetic number, because the mean of its divisors is an integer number (188685).

2⁹⁹⁸⁸⁵⁴ is an apocalyptic number.

998854 is a deficient number, since it is larger than the sum of its proper divisors (510626).

998854 is a wasteful number, since it uses less digits than its factorization.

998854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3734.

The product of its digits is 103680, while the sum is 43.

The square root of 998854 is about 999.4268357414. The cubic root of 998854 is about 99.9617853983.

The spelling of 998854 in words is "nine hundred ninety-eight thousand, eight hundred fifty-four".