818429 has 2 divisors, whose sum is σ = 818430. Its totient is φ = 818428.

The previous prime is 818413. The next prime is 818453. The reversal of 818429 is 924818.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 597529 + 220900 = 773^2 + 470^2 .

It is a cyclic number.

It is not a de Polignac number, because 818429 - 2⁴ = 818413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 818395 and 818404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (811429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 409214 + 409215.

It is an arithmetic number, because the mean of its divisors is an integer number (409215).

2⁸¹⁸⁴²⁹ is an apocalyptic number.

It is an amenable number.

818429 is a deficient number, since it is larger than the sum of its proper divisors (1).

818429 is an equidigital number, since it uses as much as digits as its factorization.

818429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 32.

The square root of 818429 is about 904.6706583061. The cubic root of 818429 is about 93.5392040121.

The spelling of 818429 in words is "eight hundred eighteen thousand, four hundred twenty-nine".