899225140 has 48 divisors (see below), whose sum is σ = 2066057280. Its totient is φ = 326036480.

The previous prime is 899225137. The next prime is 899225143. The reversal of 899225140 is 41522998.

It is an interprime number because it is at equal distance from previous prime (899225137) and next prime (899225143).

It is a junction number, because it is equal to n+sod(n) for n = 899225093 and 899225102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899225143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71871 + ... + 83449.

It is an arithmetic number, because the mean of its divisors is an integer number (43042860).

Almost surely, 2^899225140 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 899225140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1033028640).

899225140 is an abundant number, since it is smaller than the sum of its proper divisors (1166832140).

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

899225140 is a wasteful number, since it uses less digits than its factorization.

899225140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11952 (or 11950 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 899225140 is about 29987.0828858027. The cubic root of 899225140 is about 965.2122238996.

It can be divided in two parts, 89 and 9225140, that added together give a palindrome (9225229).

The spelling of 899225140 in words is "eight hundred ninety-nine million, two hundred twenty-five thousand, one hundred forty".