409165259 has 2 divisors, whose sum is σ = 409165260. Its totient is φ = 409165258.

The previous prime is 409165243. The next prime is 409165283. The reversal of 409165259 is 952561904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 409165259 - 2⁴ = 409165243 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (409165759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204582629 + 204582630.

It is an arithmetic number, because the mean of its divisors is an integer number (204582630).

Almost surely, 2^409165259 is an apocalyptic number.

409165259 is a deficient number, since it is larger than the sum of its proper divisors (1).

409165259 is an equidigital number, since it uses as much as digits as its factorization.

409165259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 409165259 is about 20227.8337693387. The cubic root of 409165259 is about 742.3913744057.

The spelling of 409165259 in words is "four hundred nine million, one hundred sixty-five thousand, two hundred fifty-nine".