405330923 has 2 divisors, whose sum is σ = 405330924. Its totient is φ = 405330922.

The previous prime is 405330901. The next prime is 405331007. The reversal of 405330923 is 329033504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 405330923 - 2¹⁸ = 405068779 is a prime.

It is not a weakly prime, because it can be changed into another prime (405330623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202665461 + 202665462.

It is an arithmetic number, because the mean of its divisors is an integer number (202665462).

Almost surely, 2^405330923 is an apocalyptic number.

405330923 is a deficient number, since it is larger than the sum of its proper divisors (1).

405330923 is an equidigital number, since it uses as much as digits as its factorization.

405330923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 405330923 is about 20132.8319667155. The cubic root of 405330923 is about 740.0650801054.

The spelling of 405330923 in words is "four hundred five million, three hundred thirty thousand, nine hundred twenty-three".