445347719 has 2 divisors, whose sum is σ = 445347720. Its totient is φ = 445347718.

The previous prime is 445347709. The next prime is 445347733. The reversal of 445347719 is 917743544.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 445347719 - 2²⁰ = 444299143 is a prime.

It is a super-2 number, since 2×445347719² = 396669181637005922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 445347719.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445347709) 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, 222673859 + 222673860.

It is an arithmetic number, because the mean of its divisors is an integer number (222673860).

Almost surely, 2^445347719 is an apocalyptic number.

445347719 is a deficient number, since it is larger than the sum of its proper divisors (1).

445347719 is an equidigital number, since it uses as much as digits as its factorization.

445347719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 44.

The square root of 445347719 is about 21103.2632310740. The cubic root of 445347719 is about 763.6594741464.

The spelling of 445347719 in words is "four hundred forty-five million, three hundred forty-seven thousand, seven hundred nineteen".