409361287 has 2 divisors, whose sum is σ = 409361288. Its totient is φ = 409361286.

The previous prime is 409361263. The next prime is 409361317. The reversal of 409361287 is 782163904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 409361287 - 2¹¹ = 409359239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (409361237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204680643 + 204680644.

It is an arithmetic number, because the mean of its divisors is an integer number (204680644).

Almost surely, 2^409361287 is an apocalyptic number.

409361287 is a deficient number, since it is larger than the sum of its proper divisors (1).

409361287 is an equidigital number, since it uses as much as digits as its factorization.

409361287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 409361287 is about 20232.6786906727. The cubic root of 409361287 is about 742.5099135197.

The spelling of 409361287 in words is "four hundred nine million, three hundred sixty-one thousand, two hundred eighty-seven".