808621469 has 2 divisors, whose sum is σ = 808621470. Its totient is φ = 808621468.

The previous prime is 808621423. The next prime is 808621481. The reversal of 808621469 is 964126808.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 574225369 + 234396100 = 23963^2 + 15310^2 .

It is a cyclic number.

It is not a de Polignac number, because 808621469 - 2²⁰ = 807572893 is a prime.

It is a super-2 number, since 2×808621469² = 1307737360255435922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (808621409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404310734 + 404310735.

It is an arithmetic number, because the mean of its divisors is an integer number (404310735).

Almost surely, 2^808621469 is an apocalyptic number.

It is an amenable number.

808621469 is a deficient number, since it is larger than the sum of its proper divisors (1).

808621469 is an equidigital number, since it uses as much as digits as its factorization.

808621469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 808621469 is about 28436.2703074788. The cubic root of 808621469 is about 931.6406346748.

The spelling of 808621469 in words is "eight hundred eight million, six hundred twenty-one thousand, four hundred sixty-nine".