450665923 has 2 divisors, whose sum is σ = 450665924. Its totient is φ = 450665922.

The previous prime is 450665911. The next prime is 450666019. The reversal of 450665923 is 329566054.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 450665923 - 2¹³ = 450657731 is a prime.

It is equal to p_23886391 and since 450665923 and 23886391 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (450665023) 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, 225332961 + 225332962.

It is an arithmetic number, because the mean of its divisors is an integer number (225332962).

Almost surely, 2^450665923 is an apocalyptic number.

450665923 is a deficient number, since it is larger than the sum of its proper divisors (1).

450665923 is an equidigital number, since it uses as much as digits as its factorization.

450665923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 40.

The square root of 450665923 is about 21228.8935886918. The cubic root of 450665923 is about 766.6872483658.

The spelling of 450665923 in words is "four hundred fifty million, six hundred sixty-five thousand, nine hundred twenty-three".