99854 has 4 divisors (see below), whose sum is σ = 149784. Its totient is φ = 49926.

The previous prime is 99839. The next prime is 99859. The reversal of 99854 is 45899.

It is a semiprime because it is the product of two primes.

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 (99859) by changing a digit.

99854 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24962 + ... + 24965.

It is an arithmetic number, because the mean of its divisors is an integer number (37446).

2⁹⁹⁸⁵⁴ is an apocalyptic number.

99854 is a deficient number, since it is larger than the sum of its proper divisors (49930).

99854 is a wasteful number, since it uses less digits than its factorization.

99854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49929.

The product of its digits is 12960, while the sum is 35.

The square root of 99854 is about 315.9968354272. The cubic root of 99854 is about 46.3932882682.

The spelling of 99854 in words is "ninety-nine thousand, eight hundred fifty-four".