812449559 has 2 divisors, whose sum is σ = 812449560. Its totient is φ = 812449558.

The previous prime is 812449549. The next prime is 812449613. The reversal of 812449559 is 955944218.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 812449559 - 2⁴ = 812449543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (812449549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406224779 + 406224780.

It is an arithmetic number, because the mean of its divisors is an integer number (406224780).

Almost surely, 2^812449559 is an apocalyptic number.

812449559 is a deficient number, since it is larger than the sum of its proper divisors (1).

812449559 is an equidigital number, since it uses as much as digits as its factorization.

812449559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400, while the sum is 47.

The square root of 812449559 is about 28503.5008200747. The cubic root of 812449559 is about 933.1084788975.

The spelling of 812449559 in words is "eight hundred twelve million, four hundred forty-nine thousand, five hundred fifty-nine".