947247387832 has 16 divisors (see below), whose sum is σ = 1776099734640. Its totient is φ = 473620791936.

The previous prime is 947247387811. The next prime is 947247387833. The reversal of 947247387832 is 238783742749.

It is a super-2 number, since 2×947247387832² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947247387833) by changing a digit.

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, 1744768 + ... + 2222320.

It is an arithmetic number, because the mean of its divisors is an integer number (111006233415).

Almost surely, 2^947247387832 is an apocalyptic number.

It is an amenable number.

947247387832 is a deficient number, since it is larger than the sum of its proper divisors (828852346808).

947247387832 is a wasteful number, since it uses less digits than its factorization.

947247387832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725502 (or 725498 counting only the distinct ones).

The product of its digits is 113799168, while the sum is 64.

The spelling of 947247387832 in words is "nine hundred forty-seven billion, two hundred forty-seven million, three hundred eighty-seven thousand, eight hundred thirty-two".