423439573 has 2 divisors, whose sum is σ = 423439574. Its totient is φ = 423439572.

The previous prime is 423439561. The next prime is 423439579. The reversal of 423439573 is 375934324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 255296484 + 168143089 = 15978^2 + 12967^2 .

It is a cyclic number.

It is not a de Polignac number, because 423439573 - 2⁹ = 423439061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423439579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211719786 + 211719787.

It is an arithmetic number, because the mean of its divisors is an integer number (211719787).

Almost surely, 2^423439573 is an apocalyptic number.

It is an amenable number.

423439573 is a deficient number, since it is larger than the sum of its proper divisors (1).

423439573 is an equidigital number, since it uses as much as digits as its factorization.

423439573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 40.

The square root of 423439573 is about 20577.6474116941. The cubic root of 423439573 is about 750.9260105724.

The spelling of 423439573 in words is "four hundred twenty-three million, four hundred thirty-nine thousand, five hundred seventy-three".