9681394392 has 48 divisors (see below), whose sum is σ = 26281363680. Its totient is φ = 3219633600.

The previous prime is 9681394367. The next prime is 9681394397. The reversal of 9681394392 is 2934931869.

9681394392 is a `hidden beast` number, since 96 + 81 + 3 + 94 + 392 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9681394397) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124959 + ... + 187022.

It is an arithmetic number, because the mean of its divisors is an integer number (547528410).

Almost surely, 2^9681394392 is an apocalyptic number.

It is an amenable number.

9681394392 is an abundant number, since it is smaller than the sum of its proper divisors (16599969288).

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

9681394392 is a wasteful number, since it uses less digits than its factorization.

9681394392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312424 (or 312417 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 54.

The square root of 9681394392 is about 98394.0770168611. The cubic root of 9681394392 is about 2131.3068010741.

The spelling of 9681394392 in words is "nine billion, six hundred eighty-one million, three hundred ninety-four thousand, three hundred ninety-two".