8168397 has 4 divisors (see below), whose sum is σ = 10891200. Its totient is φ = 5445596.

The previous prime is 8168371. The next prime is 8168411. The reversal of 8168397 is 7938618.

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.

It is a cyclic number.

It is not a de Polignac number, because 8168397 - 2⁶ = 8168333 is a prime.

8168397 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8168357) 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, 1361397 + ... + 1361402.

It is an arithmetic number, because the mean of its divisors is an integer number (2722800).

Almost surely, 2^8168397 is an apocalyptic number.

It is an amenable number.

8168397 is a deficient number, since it is larger than the sum of its proper divisors (2722803).

8168397 is a wasteful number, since it uses less digits than its factorization.

8168397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722802.

The product of its digits is 72576, while the sum is 42.

The square root of 8168397 is about 2858.0407624805. The cubic root of 8168397 is about 201.3935755164.

The spelling of 8168397 in words is "eight million, one hundred sixty-eight thousand, three hundred ninety-seven".