8445872423 has 2 divisors, whose sum is σ = 8445872424. Its totient is φ = 8445872422.

The previous prime is 8445872387. The next prime is 8445872447. The reversal of 8445872423 is 3242785448.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8445872423 - 2⁶ = 8445872359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8445872473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4222936211 + 4222936212.

It is an arithmetic number, because the mean of its divisors is an integer number (4222936212).

Almost surely, 2^8445872423 is an apocalyptic number.

8445872423 is a deficient number, since it is larger than the sum of its proper divisors (1).

8445872423 is an equidigital number, since it uses as much as digits as its factorization.

8445872423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1720320, while the sum is 47.

The square root of 8445872423 is about 91901.4277527830. The cubic root of 8445872423 is about 2036.4863602873.

The spelling of 8445872423 in words is "eight billion, four hundred forty-five million, eight hundred seventy-two thousand, four hundred twenty-three".