847979456164 has 27 divisors (see below), whose sum is σ = 1490337321291. Its totient is φ = 422176558680.

The previous prime is 847979456147. The next prime is 847979456209. The reversal of 847979456164 is 461654979748.

The square root of 847979456164 is 920858.

It is a perfect power (a square), and thus also a powerful number.

847979456164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 847979456093 and 847979456102.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 499104187 + ... + 499105885.

Almost surely, 2^847979456164 is an apocalyptic number.

847979456164 is the 920858-th square number.

It is an amenable number.

847979456164 is a deficient number, since it is larger than the sum of its proper divisors (642357865127).

847979456164 is an frugal number, since it uses more digits than its factorization.

847979456164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3944 (or 1972 counting only the distinct ones).

The product of its digits is 365783040, while the sum is 70.

The spelling of 847979456164 in words is "eight hundred forty-seven billion, nine hundred seventy-nine million, four hundred fifty-six thousand, one hundred sixty-four".