815413229 has 2 divisors, whose sum is σ = 815413230. Its totient is φ = 815413228.

The previous prime is 815413219. The next prime is 815413231. The reversal of 815413229 is 922314518.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 626350729 + 189062500 = 25027^2 + 13750^2 .

It is a cyclic number.

It is not a de Polignac number, because 815413229 - 2²⁰ = 814364653 is a prime.

Together with 815413231, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (815413219) 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, 407706614 + 407706615.

It is an arithmetic number, because the mean of its divisors is an integer number (407706615).

Almost surely, 2^815413229 is an apocalyptic number.

It is an amenable number.

815413229 is a deficient number, since it is larger than the sum of its proper divisors (1).

815413229 is an equidigital number, since it uses as much as digits as its factorization.

815413229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 35.

The square root of 815413229 is about 28555.4413203508. The cubic root of 815413229 is about 934.2417060955.

The spelling of 815413229 in words is "eight hundred fifteen million, four hundred thirteen thousand, two hundred twenty-nine".