9389215864 has 32 divisors (see below), whose sum is σ = 21178684800. Its totient is φ = 3812162400.

The previous prime is 9389215837. The next prime is 9389215879. The reversal of 9389215864 is 4685129839.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4411162 + ... + 4413289.

It is an arithmetic number, because the mean of its divisors is an integer number (661833900).

Almost surely, 2^9389215864 is an apocalyptic number.

It is an amenable number.

9389215864 is an abundant number, since it is smaller than the sum of its proper divisors (11789468936).

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

9389215864 is a wasteful number, since it uses less digits than its factorization.

9389215864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8824483 (or 8824479 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 55.

The square root of 9389215864 is about 96897.9662531676. The cubic root of 9389215864 is about 2109.6469138073.

The spelling of 9389215864 in words is "nine billion, three hundred eighty-nine million, two hundred fifteen thousand, eight hundred sixty-four".