450044993 has 2 divisors, whose sum is σ = 450044994. Its totient is φ = 450044992.

The previous prime is 450044989. The next prime is 450044999. The reversal of 450044993 is 399440054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 375274384 + 74770609 = 19372^2 + 8647^2 .

It is a cyclic number.

It is not a de Polignac number, because 450044993 - 2² = 450044989 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (450044999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225022496 + 225022497.

It is an arithmetic number, because the mean of its divisors is an integer number (225022497).

Almost surely, 2^450044993 is an apocalyptic number.

It is an amenable number.

450044993 is a deficient number, since it is larger than the sum of its proper divisors (1).

450044993 is an equidigital number, since it uses as much as digits as its factorization.

450044993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 450044993 is about 21214.2639042697. The cubic root of 450044993 is about 766.3349712167.

The spelling of 450044993 in words is "four hundred fifty million, forty-four thousand, nine hundred ninety-three".