409099 has 2 divisors, whose sum is σ = 409100. Its totient is φ = 409098.

The previous prime is 409081. The next prime is 409121. The reversal of 409099 is 990904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 409099 - 2⁷ = 408971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 409099.

It is not a weakly prime, because it can be changed into another prime (409069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204549 + 204550.

It is an arithmetic number, because the mean of its divisors is an integer number (204550).

2⁴⁰⁹⁰⁹⁹ is an apocalyptic number.

409099 is a deficient number, since it is larger than the sum of its proper divisors (1).

409099 is an equidigital number, since it uses as much as digits as its factorization.

409099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 409099 is about 639.6084739901. The cubic root of 409099 is about 74.2351298695.

The spelling of 409099 in words is "four hundred nine thousand, ninety-nine".