847384380 has 144 divisors (see below), whose sum is σ = 2809707264. Its totient is φ = 205793280.

The previous prime is 847384357. The next prime is 847384381. The reversal of 847384380 is 83483748.

It is a happy number.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (847384381) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 90394 + ... + 99326.

It is an arithmetic number, because the mean of its divisors is an integer number (19511856).

Almost surely, 2^847384380 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 847384380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1404853632).

847384380 is an abundant number, since it is smaller than the sum of its proper divisors (1962322884).

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

847384380 is a wasteful number, since it uses less digits than its factorization.

847384380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8996 (or 8991 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The square root of 847384380 is about 29109.8673992171. The cubic root of 847384380 is about 946.2955942238.

The spelling of 847384380 in words is "eight hundred forty-seven million, three hundred eighty-four thousand, three hundred eighty".