899220168 has 576 divisors, whose sum is σ = 3457209600. Its totient is φ = 207728640.

The previous prime is 899220143. The next prime is 899220173. The reversal of 899220168 is 861022998.

It is a Cunningham number, because it is equal to 29987²-1.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 19132321 + ... + 19132367.

It is an arithmetic number, because the mean of its divisors is an integer number (6002100).

Almost surely, 2^899220168 is an apocalyptic number.

899220168 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 899220168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1728604800).

899220168 is an abundant number, since it is smaller than the sum of its proper divisors (2557989432).

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

899220168 is a wasteful number, since it uses less digits than its factorization.

899220168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 899220168 is about 29986.9999833261. Note that the first 4 decimals coincide. The cubic root of 899220168 is about 965.2104449442.

The spelling of 899220168 in words is "eight hundred ninety-nine million, two hundred twenty thousand, one hundred sixty-eight".