840808896 has 56 divisors (see below), whose sum is σ = 2233233024. Its totient is φ = 279187200.

The previous prime is 840808883. The next prime is 840808949. The reversal of 840808896 is 698808048.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42171 + ... + 58821.

Almost surely, 2^840808896 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 840808896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1116616512).

840808896 is an abundant number, since it is smaller than the sum of its proper divisors (1392424128).

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

840808896 is a wasteful number, since it uses less digits than its factorization.

840808896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16929 (or 16919 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 51.

The square root of 840808896 is about 28996.7049162487. The cubic root of 840808896 is about 943.8415658653.

The spelling of 840808896 in words is "eight hundred forty million, eight hundred eight thousand, eight hundred ninety-six".