899622 has 48 divisors (see below), whose sum is σ = 2122848. Its totient is φ = 274560.

The previous prime is 899617. The next prime is 899659. The reversal of 899622 is 226998.

It is a congruent number.

It is an unprimeable 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 23 ways as a sum of consecutive naturals, for example, 16948 + ... + 17000.

It is an arithmetic number, because the mean of its divisors is an integer number (44226).

2⁸⁹⁹⁶²² is an apocalyptic number.

899622 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 899622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1061424).

899622 is an abundant number, since it is smaller than the sum of its proper divisors (1223226).

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

899622 is a wasteful number, since it uses less digits than its factorization.

899622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125 (or 122 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 899622 is about 948.4840536351. The cubic root of 899622 is about 96.5354197164.

It can be divided in two parts, 899 and 622, that added together give a square (1521 = 39²).

The spelling of 899622 in words is "eight hundred ninety-nine thousand, six hundred twenty-two".