835000409 has 2 divisors, whose sum is σ = 835000410. Its totient is φ = 835000408.

The previous prime is 835000381. The next prime is 835000417. The reversal of 835000409 is 904000538.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 655360000 + 179640409 = 25600^2 + 13403^2 .

It is a cyclic number.

It is not a de Polignac number, because 835000409 - 2²⁴ = 818223193 is a prime.

It is not a weakly prime, because it can be changed into another prime (835000459) 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, 417500204 + 417500205.

It is an arithmetic number, because the mean of its divisors is an integer number (417500205).

Almost surely, 2^835000409 is an apocalyptic number.

It is an amenable number.

835000409 is a deficient number, since it is larger than the sum of its proper divisors (1).

835000409 is an equidigital number, since it uses as much as digits as its factorization.

835000409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 835000409 is about 28896.3736306132. The cubic root of 835000409 is about 941.6631222080.

The spelling of 835000409 in words is "eight hundred thirty-five million, four hundred nine", and thus it is an aban number.