843778460 has 192 divisors, whose sum is σ = 2229534720. Its totient is φ = 261930240.

The previous prime is 843778447. The next prime is 843778471. The reversal of 843778460 is 64877348.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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, 7885727 + ... + 7885833.

It is an arithmetic number, because the mean of its divisors is an integer number (11612160).

Almost surely, 2^843778460 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 843778460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1114767360).

843778460 is an abundant number, since it is smaller than the sum of its proper divisors (1385756260).

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

843778460 is a wasteful number, since it uses less digits than its factorization.

843778460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 47.

The square root of 843778460 is about 29047.8649817848. The cubic root of 843778460 is about 944.9514117026.

The spelling of 843778460 in words is "eight hundred forty-three million, seven hundred seventy-eight thousand, four hundred sixty".