808397 has 4 divisors (see below), whose sum is σ = 828156. Its totient is φ = 788640.

The previous prime is 808391. The next prime is 808399. The reversal of 808397 is 793808.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44521 + 763876 = 211^2 + 874^2 .

It is a cyclic number.

It is not a de Polignac number, because 808397 - 2¹⁸ = 546253 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 (808391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9818 + ... + 9899.

It is an arithmetic number, because the mean of its divisors is an integer number (207039).

2⁸⁰⁸³⁹⁷ is an apocalyptic number.

It is an amenable number.

808397 is a deficient number, since it is larger than the sum of its proper divisors (19759).

808397 is a wasteful number, since it uses less digits than its factorization.

808397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19758.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 808397 is about 899.1090034028. The cubic root of 808397 is about 93.1554420542.

The spelling of 808397 in words is "eight hundred eight thousand, three hundred ninety-seven".