408424073 has 2 divisors, whose sum is σ = 408424074. Its totient is φ = 408424072.

The previous prime is 408424063. The next prime is 408424157. The reversal of 408424073 is 370424804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 352951369 + 55472704 = 18787^2 + 7448^2 .

It is a cyclic number.

It is not a de Polignac number, because 408424073 - 2¹⁴ = 408407689 is a prime.

It is not a weakly prime, because it can be changed into another prime (408424033) 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, 204212036 + 204212037.

It is an arithmetic number, because the mean of its divisors is an integer number (204212037).

Almost surely, 2^408424073 is an apocalyptic number.

It is an amenable number.

408424073 is a deficient number, since it is larger than the sum of its proper divisors (1).

408424073 is an equidigital number, since it uses as much as digits as its factorization.

408424073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 32.

The square root of 408424073 is about 20209.5045213880. The cubic root of 408424073 is about 741.9428330012.

Adding to 408424073 its reverse (370424804), we get a palindrome (778848877).

The spelling of 408424073 in words is "four hundred eight million, four hundred twenty-four thousand, seventy-three".