405673903 has 2 divisors, whose sum is σ = 405673904. Its totient is φ = 405673902.

The previous prime is 405673897. The next prime is 405673943. The reversal of 405673903 is 309376504.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-405673903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405673943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202836951 + 202836952.

It is an arithmetic number, because the mean of its divisors is an integer number (202836952).

Almost surely, 2^405673903 is an apocalyptic number.

405673903 is a deficient number, since it is larger than the sum of its proper divisors (1).

405673903 is an equidigital number, since it uses as much as digits as its factorization.

405673903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 405673903 is about 20141.3480929157. The cubic root of 405673903 is about 740.2737622351.

The spelling of 405673903 in words is "four hundred five million, six hundred seventy-three thousand, nine hundred three".