816334429 has 2 divisors, whose sum is σ = 816334430. Its totient is φ = 816334428.

The previous prime is 816334397. The next prime is 816334451. The reversal of 816334429 is 924433618.

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., 757075225 + 59259204 = 27515^2 + 7698^2 .

It is a cyclic number.

It is not a de Polignac number, because 816334429 - 2⁵ = 816334397 is a prime.

It is a super-4 number, since 4×816334429⁴ (a number of 37 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 816334391 and 816334400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (816331429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408167214 + 408167215.

It is an arithmetic number, because the mean of its divisors is an integer number (408167215).

Almost surely, 2^816334429 is an apocalyptic number.

It is an amenable number.

816334429 is a deficient number, since it is larger than the sum of its proper divisors (1).

816334429 is an equidigital number, since it uses as much as digits as its factorization.

816334429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 40.

The square root of 816334429 is about 28571.5667928799. The cubic root of 816334429 is about 934.5933885474.

The spelling of 816334429 in words is "eight hundred sixteen million, three hundred thirty-four thousand, four hundred twenty-nine".