847066440 has 128 divisors (see below), whose sum is σ = 2807654400. Its totient is φ = 202725120.

The previous prime is 847066433. The next prime is 847066447. The reversal of 847066440 is 44660748.

847066440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (847066433) and next prime (847066447).

It is not an unprimeable number, because it can be changed into a prime (847066447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100219 + ... + 108341.

It is an arithmetic number, because the mean of its divisors is an integer number (21934800).

Almost surely, 2^847066440 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 847066440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1403827200).

847066440 is an abundant number, since it is smaller than the sum of its proper divisors (1960587960).

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

847066440 is a wasteful number, since it uses less digits than its factorization.

847066440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8227 (or 8223 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The square root of 847066440 is about 29104.4058520355. The cubic root of 847066440 is about 946.1772288694.

The spelling of 847066440 in words is "eight hundred forty-seven million, sixty-six thousand, four hundred forty".