445478819 has 2 divisors, whose sum is σ = 445478820. Its totient is φ = 445478818.

The previous prime is 445478741. The next prime is 445478827. The reversal of 445478819 is 918874544.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 445478819 - 2¹² = 445474723 is a prime.

It is a super-2 number, since 2×445478819² = 396902756355269522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (445478119) 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, 222739409 + 222739410.

It is an arithmetic number, because the mean of its divisors is an integer number (222739410).

Almost surely, 2^445478819 is an apocalyptic number.

445478819 is a deficient number, since it is larger than the sum of its proper divisors (1).

445478819 is an equidigital number, since it uses as much as digits as its factorization.

445478819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1290240, while the sum is 50.

The square root of 445478819 is about 21106.3691571999. The cubic root of 445478819 is about 763.7344013179.

The spelling of 445478819 in words is "four hundred forty-five million, four hundred seventy-eight thousand, eight hundred nineteen".