445345247 has 2 divisors, whose sum is σ = 445345248. Its totient is φ = 445345246.

The previous prime is 445345213. The next prime is 445345261. The reversal of 445345247 is 742543544.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 445345247 - 2⁶ = 445345183 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 445345247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445345267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222672623 + 222672624.

It is an arithmetic number, because the mean of its divisors is an integer number (222672624).

Almost surely, 2^445345247 is an apocalyptic number.

445345247 is a deficient number, since it is larger than the sum of its proper divisors (1).

445345247 is an equidigital number, since it uses as much as digits as its factorization.

445345247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 268800, while the sum is 38.

The square root of 445345247 is about 21103.2046618517. The cubic root of 445345247 is about 763.6580611908.

The spelling of 445345247 in words is "four hundred forty-five million, three hundred forty-five thousand, two hundred forty-seven".