899871632 has 40 divisors (see below), whose sum is σ = 1911633600. Its totient is φ = 406961280.

The previous prime is 899871631. The next prime is 899871647. The reversal of 899871632 is 236178998.

899871632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (899871631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22178 + ... + 47870.

It is an arithmetic number, because the mean of its divisors is an integer number (47790840).

Almost surely, 2^899871632 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 899871632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (955816800).

899871632 is an abundant number, since it is smaller than the sum of its proper divisors (1011761968).

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

899871632 is a wasteful number, since it uses less digits than its factorization.

899871632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25911 (or 25905 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 53.

The square root of 899871632 is about 29997.8604570393. The cubic root of 899871632 is about 965.4434794818.

It can be divided in two parts, 89987 and 1632, that added together give a palindrome (91619).

The spelling of 899871632 in words is "eight hundred ninety-nine million, eight hundred seventy-one thousand, six hundred thirty-two".