899408867280 has 640 divisors, whose sum is σ = 3649302429696. Its totient is φ = 177680025600.

The previous prime is 899408867263. The next prime is 899408867293. The reversal of 899408867280 is 82768804998.

899408867280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 70975345 + ... + 70988015.

Almost surely, 2^899408867280 is an apocalyptic number.

899408867280 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 899408867280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1824651214848).

899408867280 is an abundant number, since it is smaller than the sum of its proper divisors (2749893562416).

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

899408867280 is a wasteful number, since it uses less digits than its factorization.

899408867280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12895 (or 12889 counting only the distinct ones).

The product of its (nonzero) digits is 111476736, while the sum is 69.

The spelling of 899408867280 in words is "eight hundred ninety-nine billion, four hundred eight million, eight hundred sixty-seven thousand, two hundred eighty".