405354023 has 2 divisors, whose sum is σ = 405354024. Its totient is φ = 405354022.

The previous prime is 405353969. The next prime is 405354041. The reversal of 405354023 is 320453504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 405354023 - 2⁶ = 405353959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 405353983 and 405354001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405353023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202677011 + 202677012.

It is an arithmetic number, because the mean of its divisors is an integer number (202677012).

Almost surely, 2^405354023 is an apocalyptic number.

405354023 is a deficient number, since it is larger than the sum of its proper divisors (1).

405354023 is an equidigital number, since it uses as much as digits as its factorization.

405354023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 405354023 is about 20133.4056483249. The cubic root of 405354023 is about 740.0791387240.

The spelling of 405354023 in words is "four hundred five million, three hundred fifty-four thousand, twenty-three".