9472388647 has 4 divisors (see below), whose sum is σ = 9477157816. Its totient is φ = 9467619480.

The previous prime is 9472388641. The next prime is 9472388669. The reversal of 9472388647 is 7468832749.

9472388647 is digitally balanced in base 3, 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, and also an emirpimes, since its reverse is a distinct semiprime: 7468832749 = 7 ⋅1066976107.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9472388647 is a prime.

It is a super-2 number, since 2×9472388647² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9472388591 and 9472388600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9472388641) 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, 2381604 + ... + 2385577.

It is an arithmetic number, because the mean of its divisors is an integer number (2369289454).

Almost surely, 2^9472388647 is an apocalyptic number.

9472388647 is a deficient number, since it is larger than the sum of its proper divisors (4769169).

9472388647 is a wasteful number, since it uses less digits than its factorization.

9472388647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4769168.

The product of its digits is 16257024, while the sum is 58.

The square root of 9472388647 is about 97326.1971259537. The cubic root of 9472388647 is about 2115.8579269768.

The spelling of 9472388647 in words is "nine billion, four hundred seventy-two million, three hundred eighty-eight thousand, six hundred forty-seven".