423544027 has 2 divisors, whose sum is σ = 423544028. Its totient is φ = 423544026.

The previous prime is 423544019. The next prime is 423544049. The reversal of 423544027 is 720445324.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423544027 - 2³ = 423544019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 423544027.

It is not a weakly prime, because it can be changed into another prime (423544087) 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, 211772013 + 211772014.

It is an arithmetic number, because the mean of its divisors is an integer number (211772014).

Almost surely, 2^423544027 is an apocalyptic number.

423544027 is a deficient number, since it is larger than the sum of its proper divisors (1).

423544027 is an equidigital number, since it uses as much as digits as its factorization.

423544027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 31.

The square root of 423544027 is about 20580.1853004291. The cubic root of 423544027 is about 750.9877515950.

The spelling of 423544027 in words is "four hundred twenty-three million, five hundred forty-four thousand, twenty-seven".