899615040 has 448 divisors, whose sum is σ = 3261603840. Its totient is φ = 209018880.

The previous prime is 899615039. The next prime is 899615047. The reversal of 899615040 is 40516998.

It is a junction number, because it is equal to n+sod(n) for n = 899614983 and 899615001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899615047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20921259 + ... + 20921301.

Almost surely, 2^899615040 is an apocalyptic number.

899615040 is a gapful number since it is divisible by the number (80) 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 899615040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1630801920).

899615040 is an abundant number, since it is smaller than the sum of its proper divisors (2361988800).

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

899615040 is a wasteful number, since it uses less digits than its factorization.

899615040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 899615040 is about 29993.5833137690. The cubic root of 899615040 is about 965.3517076432.

The spelling of 899615040 in words is "eight hundred ninety-nine million, six hundred fifteen thousand, forty".