423523069 has 2 divisors, whose sum is σ = 423523070. Its totient is φ = 423523068.

The previous prime is 423523031. The next prime is 423523073. The reversal of 423523069 is 960325324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 350625625 + 72897444 = 18725^2 + 8538^2 .

It is a cyclic number.

It is not a de Polignac number, because 423523069 - 2⁷ = 423522941 is a prime.

It is a super-2 number, since 2×423523069² = 358743579950357522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423523019) 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, 211761534 + 211761535.

It is an arithmetic number, because the mean of its divisors is an integer number (211761535).

Almost surely, 2^423523069 is an apocalyptic number.

It is an amenable number.

423523069 is a deficient number, since it is larger than the sum of its proper divisors (1).

423523069 is an equidigital number, since it uses as much as digits as its factorization.

423523069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 423523069 is about 20579.6761150413. The cubic root of 423523069 is about 750.9753644838.

The spelling of 423523069 in words is "four hundred twenty-three million, five hundred twenty-three thousand, sixty-nine".