445620023 has 2 divisors, whose sum is σ = 445620024. Its totient is φ = 445620022.

The previous prime is 445619989. The next prime is 445620029. The reversal of 445620023 is 320026544.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445620023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 445619974 and 445620001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445620029) 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, 222810011 + 222810012.

It is an arithmetic number, because the mean of its divisors is an integer number (222810012).

Almost surely, 2^445620023 is an apocalyptic number.

445620023 is a deficient number, since it is larger than the sum of its proper divisors (1).

445620023 is an equidigital number, since it uses as much as digits as its factorization.

445620023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 445620023 is about 21109.7139487962. The cubic root of 445620023 is about 763.8150867553.

Adding to 445620023 its reverse (320026544), we get a palindrome (765646567).

The spelling of 445620023 in words is "four hundred forty-five million, six hundred twenty thousand, twenty-three".