899278380 has 864 divisors, whose sum is σ = 4015484928. Its totient is φ = 159667200.

The previous prime is 899278363. The next prime is 899278423. The reversal of 899278380 is 83872998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 29008965 + ... + 29008995.

It is an arithmetic number, because the mean of its divisors is an integer number (4647552).

Almost surely, 2^899278380 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 899278380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2007742464).

899278380 is an abundant number, since it is smaller than the sum of its proper divisors (3116206548).

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

899278380 is a wasteful number, since it uses less digits than its factorization.

899278380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The square root of 899278380 is about 29987.9705882209. The cubic root of 899278380 is about 965.2312724790.

The spelling of 899278380 in words is "eight hundred ninety-nine million, two hundred seventy-eight thousand, three hundred eighty".