9217827397 has 8 divisors (see below), whose sum is σ = 9987031296. Its totient is φ = 8473843392.

The previous prime is 9217827391. The next prime is 9217827433. The reversal of 9217827397 is 7937287129.

It is a happy number.

9217827397 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9217827397 - 2¹⁵ = 9217794629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9217827391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6304213 + ... + 6305674.

It is an arithmetic number, because the mean of its divisors is an integer number (1248378912).

Almost surely, 2^9217827397 is an apocalyptic number.

It is an amenable number.

9217827397 is a deficient number, since it is larger than the sum of its proper divisors (769203899).

9217827397 is a wasteful number, since it uses less digits than its factorization.

9217827397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12609947.

The product of its digits is 2667168, while the sum is 55.

The square root of 9217827397 is about 96009.5172209505. The cubic root of 9217827397 is about 2096.7316807160.

The spelling of 9217827397 in words is "nine billion, two hundred seventeen million, eight hundred twenty-seven thousand, three hundred ninety-seven".