847856379 has 4 divisors (see below), whose sum is σ = 1130475176. Its totient is φ = 565237584.

The previous prime is 847856353. The next prime is 847856381. The reversal of 847856379 is 973658748.

847856379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 847856379 - 2¹¹ = 847854331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (847856279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141309394 + ... + 141309399.

It is an arithmetic number, because the mean of its divisors is an integer number (282618794).

Almost surely, 2^847856379 is an apocalyptic number.

847856379 is a deficient number, since it is larger than the sum of its proper divisors (282618797).

847856379 is a wasteful number, since it uses less digits than its factorization.

847856379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282618796.

The product of its digits is 10160640, while the sum is 57.

The square root of 847856379 is about 29117.9734700065. The cubic root of 847856379 is about 946.4712593573.

The spelling of 847856379 in words is "eight hundred forty-seven million, eight hundred fifty-six thousand, three hundred seventy-nine".