899493660 has 288 divisors, whose sum is σ = 3184796160. Its totient is φ = 211444992.

The previous prime is 899493653. The next prime is 899493701. The reversal of 899493660 is 66394998.

It is a happy number.

899493660 is a `hidden beast` number, since 8 + 99 + 493 + 6 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 899493597 and 899493606.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 1452831 + ... + 1453449.

It is an arithmetic number, because the mean of its divisors is an integer number (11058320).

Almost surely, 2^899493660 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 899493660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1592398080).

899493660 is an abundant number, since it is smaller than the sum of its proper divisors (2285302500).

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

899493660 is a wasteful number, since it uses less digits than its factorization.

899493660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 54.

The square root of 899493660 is about 29991.5598127206. The cubic root of 899493660 is about 965.3082891974.

The spelling of 899493660 in words is "eight hundred ninety-nine million, four hundred ninety-three thousand, six hundred sixty".