445778863 has 2 divisors, whose sum is σ = 445778864. Its totient is φ = 445778862.

The previous prime is 445778843. The next prime is 445778869. The reversal of 445778863 is 368877544.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 445778863 - 2⁵ = 445778831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 445778863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445778869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222889431 + 222889432.

It is an arithmetic number, because the mean of its divisors is an integer number (222889432).

Almost surely, 2^445778863 is an apocalyptic number.

445778863 is a deficient number, since it is larger than the sum of its proper divisors (1).

445778863 is an equidigital number, since it uses as much as digits as its factorization.

445778863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4515840, while the sum is 52.

The square root of 445778863 is about 21113.4758625860. The cubic root of 445778863 is about 763.9058292188.

The spelling of 445778863 in words is "four hundred forty-five million, seven hundred seventy-eight thousand, eight hundred sixty-three".