8199397 has 4 divisors (see below), whose sum is σ = 8240800. Its totient is φ = 8157996.

The previous prime is 8199391. The next prime is 8199409. The reversal of 8199397 is 7939918.

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 a de Polignac number, because none of the positive numbers 2^k-8199397 is a prime.

It is a super-2 number, since 2×8199397² = 134460222327218, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8199391) 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, 20403 + ... + 20800.

It is an arithmetic number, because the mean of its divisors is an integer number (2060200).

Almost surely, 2^8199397 is an apocalyptic number.

It is an amenable number.

8199397 is a deficient number, since it is larger than the sum of its proper divisors (41403).

8199397 is a wasteful number, since it uses less digits than its factorization.

8199397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41402.

The product of its digits is 122472, while the sum is 46.

The square root of 8199397 is about 2863.4589223525. The cubic root of 8199397 is about 201.6480244438.

The spelling of 8199397 in words is "eight million, one hundred ninety-nine thousand, three hundred ninety-seven".