847172464 has 20 divisors (see below), whose sum is σ = 1694345920. Its totient is φ = 409921920.

The previous prime is 847172449. The next prime is 847172533. The reversal of 847172464 is 464271748.

847172464 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 847172464.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 853509 + ... + 854500.

It is an arithmetic number, because the mean of its divisors is an integer number (84717296).

Almost surely, 2^847172464 is an apocalyptic number.

It is an amenable number.

847172464 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

847172464 is a wasteful number, since it uses less digits than its factorization.

847172464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1708048 (or 1708042 counting only the distinct ones).

The product of its digits is 301056, while the sum is 43.

The square root of 847172464 is about 29106.2272374830. The cubic root of 847172464 is about 946.2167036593.

The spelling of 847172464 in words is "eight hundred forty-seven million, one hundred seventy-two thousand, four hundred sixty-four".