9856397 has 4 divisors (see below), whose sum is σ = 10284960. Its totient is φ = 9427836.

The previous prime is 9856391. The next prime is 9856403. The reversal of 9856397 is 7936589.

9856397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7936589 = 31 ⋅256019.

It is an interprime number because it is at equal distance from previous prime (9856391) and next prime (9856403).

It is a cyclic number.

It is not a de Polignac number, because 9856397 - 2⁴ = 9856381 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 (9856391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214247 + ... + 214292.

It is an arithmetic number, because the mean of its divisors is an integer number (2571240).

Almost surely, 2^9856397 is an apocalyptic number.

It is an amenable number.

9856397 is a deficient number, since it is larger than the sum of its proper divisors (428563).

9856397 is a wasteful number, since it uses less digits than its factorization.

9856397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428562.

The product of its digits is 408240, while the sum is 47.

The square root of 9856397 is about 3139.4899267238. The cubic root of 9856397 is about 214.4072151378.

The spelling of 9856397 in words is "nine million, eight hundred fifty-six thousand, three hundred ninety-seven".