899220 has 48 divisors (see below), whose sum is σ = 2878848. Its totient is φ = 205440.

The previous prime is 899209. The next prime is 899221. The reversal of 899220 is 22998.

899220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 899220.

It is not an unprimeable number, because it can be changed into a prime (899221) by changing a digit.

899220 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 651 + ... + 1490.

It is an arithmetic number, because the mean of its divisors is an integer number (59976).

2⁸⁹⁹²²⁰ is an apocalyptic number.

It is an amenable number.

899220 is an abundant number, since it is smaller than the sum of its proper divisors (1979628).

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

899220 is a wasteful number, since it uses less digits than its factorization.

899220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160 (or 2158 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 899220 is about 948.2721128453. The cubic root of 899220 is about 96.5210384835.

The spelling of 899220 in words is "eight hundred ninety-nine thousand, two hundred twenty".