899984 has 10 divisors (see below), whose sum is σ = 1743750. Its totient is φ = 449984.

The previous prime is 899981. The next prime is 900001. The reversal of 899984 is 489998.

It can be written as a sum of positive squares in only one way, i.e., 883600 + 16384 = 940^2 + 128^2 .

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (899981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28109 + ... + 28140.

It is an arithmetic number, because the mean of its divisors is an integer number (174375).

2⁸⁹⁹⁹⁸⁴ is an apocalyptic number.

It is an amenable number.

899984 is a deficient number, since it is larger than the sum of its proper divisors (843766).

899984 is a wasteful number, since it uses less digits than its factorization.

899984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56257 (or 56251 counting only the distinct ones).

The product of its digits is 186624, while the sum is 47.

The square root of 899984 is about 948.6748652726. The cubic root of 899984 is about 96.5483663153.

The spelling of 899984 in words is "eight hundred ninety-nine thousand, nine hundred eighty-four".