408106493 has 2 divisors, whose sum is σ = 408106494. Its totient is φ = 408106492.

The previous prime is 408106483. The next prime is 408106547. The reversal of 408106493 is 394601804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 270701209 + 137405284 = 16453^2 + 11722^2 .

It is a cyclic number.

It is not a de Polignac number, because 408106493 - 2¹⁶ = 408040957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (408106463) 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, 204053246 + 204053247.

It is an arithmetic number, because the mean of its divisors is an integer number (204053247).

Almost surely, 2^408106493 is an apocalyptic number.

It is an amenable number.

408106493 is a deficient number, since it is larger than the sum of its proper divisors (1).

408106493 is an equidigital number, since it uses as much as digits as its factorization.

408106493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 408106493 is about 20201.6457992907. The cubic root of 408106493 is about 741.7504779475.

The spelling of 408106493 in words is "four hundred eight million, one hundred six thousand, four hundred ninety-three".