836364409 has 2 divisors, whose sum is σ = 836364410. Its totient is φ = 836364408.

The previous prime is 836364367. The next prime is 836364421. The reversal of 836364409 is 904463638.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 668739600 + 167624809 = 25860^2 + 12947^2 .

It is a cyclic number.

It is not a de Polignac number, because 836364409 - 2²⁵ = 802809977 is a prime.

It is not a weakly prime, because it can be changed into another prime (836364499) 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, 418182204 + 418182205.

It is an arithmetic number, because the mean of its divisors is an integer number (418182205).

Almost surely, 2^836364409 is an apocalyptic number.

It is an amenable number.

836364409 is a deficient number, since it is larger than the sum of its proper divisors (1).

836364409 is an equidigital number, since it uses as much as digits as its factorization.

836364409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 43.

The square root of 836364409 is about 28919.9655774346. The cubic root of 836364409 is about 942.1755889221.

The spelling of 836364409 in words is "eight hundred thirty-six million, three hundred sixty-four thousand, four hundred nine".