445797823 has 2 divisors, whose sum is σ = 445797824. Its totient is φ = 445797822.

The previous prime is 445797761. The next prime is 445797827. The reversal of 445797823 is 328797544.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445797823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445797827) 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, 222898911 + 222898912.

It is an arithmetic number, because the mean of its divisors is an integer number (222898912).

Almost surely, 2^445797823 is an apocalyptic number.

445797823 is a deficient number, since it is larger than the sum of its proper divisors (1).

445797823 is an equidigital number, since it uses as much as digits as its factorization.

445797823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 49.

The square root of 445797823 is about 21113.9248601486. The cubic root of 445797823 is about 763.9166592890.

The spelling of 445797823 in words is "four hundred forty-five million, seven hundred ninety-seven thousand, eight hundred twenty-three".