806419129 has 2 divisors, whose sum is σ = 806419130. Its totient is φ = 806419128.

The previous prime is 806419111. The next prime is 806419183. The reversal of 806419129 is 921914608.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 699338025 + 107081104 = 26445^2 + 10348^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-806419129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 806419091 and 806419100.

It is not a weakly prime, because it can be changed into another prime (806419199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403209564 + 403209565.

It is an arithmetic number, because the mean of its divisors is an integer number (403209565).

Almost surely, 2^806419129 is an apocalyptic number.

It is an amenable number.

806419129 is a deficient number, since it is larger than the sum of its proper divisors (1).

806419129 is an equidigital number, since it uses as much as digits as its factorization.

806419129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 806419129 is about 28397.5197684587. The cubic root of 806419129 is about 930.7940684009.

The spelling of 806419129 in words is "eight hundred six million, four hundred nineteen thousand, one hundred twenty-nine".