445440263 has 2 divisors, whose sum is σ = 445440264. Its totient is φ = 445440262.

The previous prime is 445440253. The next prime is 445440323. The reversal of 445440263 is 362044544.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 445440263 - 2⁸ = 445440007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445440253) 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, 222720131 + 222720132.

It is an arithmetic number, because the mean of its divisors is an integer number (222720132).

Almost surely, 2^445440263 is an apocalyptic number.

445440263 is a deficient number, since it is larger than the sum of its proper divisors (1).

445440263 is an equidigital number, since it uses as much as digits as its factorization.

445440263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 32.

The square root of 445440263 is about 21105.4557638540. The cubic root of 445440263 is about 763.7123670543.

The spelling of 445440263 in words is "four hundred forty-five million, four hundred forty thousand, two hundred sixty-three".