9384395823972 has 72 divisors (see below), whose sum is σ = 25547332836480. Its totient is φ = 2887402196160.

The previous prime is 9384395823961. The next prime is 9384395824009. The reversal of 9384395823972 is 2793285934839.

It is a happy number.

9384395823972 is a `hidden beast` number, since 9 + 3 + 8 + 4 + 3 + 9 + 582 + 39 + 7 + 2 = 666.

It is a super-2 number, since 2×9384395823972² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (72) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 9384395823972.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13158597 + ... + 13853427.

Almost surely, 2^{9384395823972} is an apocalyptic number.

It is an amenable number.

9384395823972 is an abundant number, since it is smaller than the sum of its proper divisors (16162937012508).

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

9384395823972 is a wasteful number, since it uses less digits than its factorization.

9384395823972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723713 (or 723708 counting only the distinct ones).

The product of its digits is 705438720, while the sum is 72.

The spelling of 9384395823972 in words is "nine trillion, three hundred eighty-four billion, three hundred ninety-five million, eight hundred twenty-three thousand, nine hundred seventy-two".