899912 has 32 divisors (see below), whose sum is σ = 1927800. Its totient is φ = 390144.

The previous prime is 899903. The next prime is 899917. The reversal of 899912 is 219998.

It can be written as a sum of positive squares in 4 ways, for example, as 835396 + 64516 = 914^2 + 254^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899917) by changing a digit.

899912 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1514 + ... + 2022.

2⁸⁹⁹⁹¹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 899912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (963900).

899912 is an abundant number, since it is smaller than the sum of its proper divisors (1027888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

899912 is a wasteful number, since it uses less digits than its factorization.

899912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545 (or 541 counting only the distinct ones).

The product of its digits is 11664, while the sum is 38.

The square root of 899912 is about 948.6369168444. The cubic root of 899912 is about 96.5457915778.

It can be divided in two parts, 89 and 9912, that added together give a palindrome (10001).

The spelling of 899912 in words is "eight hundred ninety-nine thousand, nine hundred twelve".