899152644 has 96 divisors (see below), whose sum is σ = 2469712896. Its totient is φ = 251965440.

The previous prime is 899152619. The next prime is 899152649. The reversal of 899152644 is 446251998.

It is a junction number, because it is equal to n+sod(n) for n = 899152593 and 899152602.

It is not an unprimeable number, because it can be changed into a prime (899152649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76744 + ... + 87680.

It is an arithmetic number, because the mean of its divisors is an integer number (25726176).

Almost surely, 2^899152644 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 899152644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1234856448).

899152644 is an abundant number, since it is smaller than the sum of its proper divisors (1570560252).

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

899152644 is a wasteful number, since it uses less digits than its factorization.

899152644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11005 (or 11003 counting only the distinct ones).

The product of its digits is 622080, while the sum is 48.

The square root of 899152644 is about 29985.8740743037. The cubic root of 899152644 is about 965.1862845647.

The spelling of 899152644 in words is "eight hundred ninety-nine million, one hundred fifty-two thousand, six hundred forty-four".