808389623 has 2 divisors, whose sum is σ = 808389624. Its totient is φ = 808389622.

The previous prime is 808389607. The next prime is 808389643. The reversal of 808389623 is 326983808.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 808389623 - 2⁴ = 808389607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (808389643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404194811 + 404194812.

It is an arithmetic number, because the mean of its divisors is an integer number (404194812).

Almost surely, 2^808389623 is an apocalyptic number.

808389623 is a deficient number, since it is larger than the sum of its proper divisors (1).

808389623 is an equidigital number, since it uses as much as digits as its factorization.

808389623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 808389623 is about 28432.1934257630. The cubic root of 808389623 is about 931.5515869108.

The spelling of 808389623 in words is "eight hundred eight million, three hundred eighty-nine thousand, six hundred twenty-three".