409998067 has 2 divisors, whose sum is σ = 409998068. Its totient is φ = 409998066.

The previous prime is 409998059. The next prime is 409998097. The reversal of 409998067 is 760899904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 409998067 - 2³ = 409998059 is a prime.

It is not a weakly prime, because it can be changed into another prime (409998097) 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, 204999033 + 204999034.

It is an arithmetic number, because the mean of its divisors is an integer number (204999034).

Almost surely, 2^409998067 is an apocalyptic number.

409998067 is a deficient number, since it is larger than the sum of its proper divisors (1).

409998067 is an equidigital number, since it uses as much as digits as its factorization.

409998067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 409998067 is about 20248.4089992276. The cubic root of 409998067 is about 742.8947166487.

The spelling of 409998067 in words is "four hundred nine million, nine hundred ninety-eight thousand, sixty-seven".