409478497 has 2 divisors, whose sum is σ = 409478498. Its totient is φ = 409478496.

The previous prime is 409478491. The next prime is 409478549. The reversal of 409478497 is 794874904.

It is an a-pointer prime, because the next prime (409478549) can be obtained adding 409478497 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 364199056 + 45279441 = 19084^2 + 6729^2 .

It is a cyclic number.

It is not a de Polignac number, because 409478497 - 2¹¹ = 409476449 is a prime.

It is not a weakly prime, because it can be changed into another prime (409478491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204739248 + 204739249.

It is an arithmetic number, because the mean of its divisors is an integer number (204739249).

Almost surely, 2^409478497 is an apocalyptic number.

It is an amenable number.

409478497 is a deficient number, since it is larger than the sum of its proper divisors (1).

409478497 is an equidigital number, since it uses as much as digits as its factorization.

409478497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The square root of 409478497 is about 20235.5750350713. The cubic root of 409478497 is about 742.5807729169.

The spelling of 409478497 in words is "four hundred nine million, four hundred seventy-eight thousand, four hundred ninety-seven".