409468019 has 2 divisors, whose sum is σ = 409468020. Its totient is φ = 409468018.

The previous prime is 409468009. The next prime is 409468027. The reversal of 409468019 is 910864904.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 409468019 - 2²⁰ = 408419443 is a prime.

It is a super-2 number, since 2×409468019² = 335328117167568722, which contains 22 as substring.

It is a Chen prime.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (409468009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204734009 + 204734010.

It is an arithmetic number, because the mean of its divisors is an integer number (204734010).

Almost surely, 2^409468019 is an apocalyptic number.

409468019 is a deficient number, since it is larger than the sum of its proper divisors (1).

409468019 is an equidigital number, since it uses as much as digits as its factorization.

409468019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 409468019 is about 20235.3161329395. The cubic root of 409468019 is about 742.5744389842.

The spelling of 409468019 in words is "four hundred nine million, four hundred sixty-eight thousand, nineteen".