8643923 has 2 divisors, whose sum is σ = 8643924. Its totient is φ = 8643922.

The previous prime is 8643919. The next prime is 8643941. The reversal of 8643923 is 3293468.

It is a happy number.

8643923 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8643923 - 2² = 8643919 is a prime.

It is a d-powerful number, because it can be written as 8³ + 6² + 4⁷ + 3⁷ + 9⁵ + 2²³ + 3¹¹ .

It is not a weakly prime, because it can be changed into another prime (8643953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4321961 + 4321962.

It is an arithmetic number, because the mean of its divisors is an integer number (4321962).

Almost surely, 2^8643923 is an apocalyptic number.

8643923 is a deficient number, since it is larger than the sum of its proper divisors (1).

8643923 is an equidigital number, since it uses as much as digits as its factorization.

8643923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 35.

The square root of 8643923 is about 2940.0549314596. The cubic root of 8643923 is about 205.2281655484.

The spelling of 8643923 in words is "eight million, six hundred forty-three thousand, nine hundred twenty-three".