409659143 has 2 divisors, whose sum is σ = 409659144. Its totient is φ = 409659142.

The previous prime is 409659113. The next prime is 409659163. The reversal of 409659143 is 341956904.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 409659143 - 2²⁰ = 408610567 is a prime.

It is a super-2 number, since 2×409659143² = 335641226886988898, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 409659143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (409659113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204829571 + 204829572.

It is an arithmetic number, because the mean of its divisors is an integer number (204829572).

Almost surely, 2^409659143 is an apocalyptic number.

409659143 is a deficient number, since it is larger than the sum of its proper divisors (1).

409659143 is an equidigital number, since it uses as much as digits as its factorization.

409659143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 409659143 is about 20240.0381175530. The cubic root of 409659143 is about 742.6899561224.

The spelling of 409659143 in words is "four hundred nine million, six hundred fifty-nine thousand, one hundred forty-three".