408389087 has 2 divisors, whose sum is σ = 408389088. Its totient is φ = 408389086.

The previous prime is 408389027. The next prime is 408389143. The reversal of 408389087 is 780983804.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-408389087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (408389027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204194543 + 204194544.

It is an arithmetic number, because the mean of its divisors is an integer number (204194544).

Almost surely, 2^408389087 is an apocalyptic number.

408389087 is a deficient number, since it is larger than the sum of its proper divisors (1).

408389087 is an equidigital number, since it uses as much as digits as its factorization.

408389087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 408389087 is about 20208.6389200263. The cubic root of 408389087 is about 741.9216472167.

The spelling of 408389087 in words is "four hundred eight million, three hundred eighty-nine thousand, eighty-seven".