409499 has 2 divisors, whose sum is σ = 409500. Its totient is φ = 409498.

The previous prime is 409483. The next prime is 409517. The reversal of 409499 is 994904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 409499 - 2⁴ = 409483 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (409429) 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, 204749 + 204750.

It is an arithmetic number, because the mean of its divisors is an integer number (204750).

2⁴⁰⁹⁴⁹⁹ is an apocalyptic number.

409499 is a deficient number, since it is larger than the sum of its proper divisors (1).

409499 is an equidigital number, since it uses as much as digits as its factorization.

409499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 409499 is about 639.9210888852. The cubic root of 409499 is about 74.2593166632.

The spelling of 409499 in words is "four hundred nine thousand, four hundred ninety-nine".