9439047644 has 12 divisors (see below), whose sum is σ = 17788974504. Its totient is φ = 4356483504.

The previous prime is 9439047641. The next prime is 9439047659. The reversal of 9439047644 is 4467409349.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 9439047592 and 9439047601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9439047641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90760022 + ... + 90760125.

It is an arithmetic number, because the mean of its divisors is an integer number (1482414542).

Almost surely, 2^9439047644 is an apocalyptic number.

It is an amenable number.

9439047644 is a deficient number, since it is larger than the sum of its proper divisors (8349926860).

9439047644 is a wasteful number, since it uses less digits than its factorization.

9439047644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181520164 (or 181520162 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 50.

The square root of 9439047644 is about 97154.7613038085. The cubic root of 9439047644 is about 2113.3725364217.

The spelling of 9439047644 in words is "nine billion, four hundred thirty-nine million, forty-seven thousand, six hundred forty-four".