808940197 has 8 divisors (see below), whose sum is σ = 871856216. Its totient is φ = 746122752.

The previous prime is 808940183. The next prime is 808940207. The reversal of 808940197 is 791049808.

It is a happy number.

808940197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 525051396 + 283888801 = 22914^2 + 16849^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-808940197 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 (808940117) 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, 7128 + ... + 40849.

It is an arithmetic number, because the mean of its divisors is an integer number (108982027).

Almost surely, 2^808940197 is an apocalyptic number.

It is an amenable number.

808940197 is a deficient number, since it is larger than the sum of its proper divisors (62916019).

808940197 is a wasteful number, since it uses less digits than its factorization.

808940197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49287.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 808940197 is about 28441.8740064715. The cubic root of 808940197 is about 931.7630244299.

The spelling of 808940197 in words is "eight hundred eight million, nine hundred forty thousand, one hundred ninety-seven".