841409856 has 336 divisors, whose sum is σ = 2929006080. Its totient is φ = 234524160.

The previous prime is 841409819. The next prime is 841409903. The reversal of 841409856 is 658904148.

It is a tau number, because it is divible by the number of its divisors (336).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6422911 + ... + 6423041.

It is an arithmetic number, because the mean of its divisors is an integer number (8717280).

Almost surely, 2^841409856 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 841409856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1464503040).

841409856 is an abundant number, since it is smaller than the sum of its proper divisors (2087596224).

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

841409856 is a wasteful number, since it uses less digits than its factorization.

841409856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 841409856 is about 29007.0656220170. The cubic root of 841409856 is about 944.0663795131.

The spelling of 841409856 in words is "eight hundred forty-one million, four hundred nine thousand, eight hundred fifty-six".