899444 has 36 divisors (see below), whose sum is σ = 1977444. Its totient is φ = 354816.

The previous prime is 899429. The next prime is 899447. The reversal of 899444 is 444998.

It can be written as a sum of positive squares in 2 ways, for example, as 240100 + 659344 = 490^2 + 812^2 .

Its product of digits (41472) is a multiple of the sum of its prime factors (384).

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 899398 and 899407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2372 + ... + 2724.

It is an arithmetic number, because the mean of its divisors is an integer number (54929).

2⁸⁹⁹⁴⁴⁴ 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 899444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (988722).

899444 is an abundant number, since it is smaller than the sum of its proper divisors (1078000).

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

899444 is a wasteful number, since it uses less digits than its factorization.

899444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 375 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 899444 is about 948.3902150486. The cubic root of 899444 is about 96.5290524354.

The spelling of 899444 in words is "eight hundred ninety-nine thousand, four hundred forty-four".