423512069 has 2 divisors, whose sum is σ = 423512070. Its totient is φ = 423512068.

The previous prime is 423512039. The next prime is 423512077. The reversal of 423512069 is 960215324.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 420045025 + 3467044 = 20495^2 + 1862^2 .

It is a cyclic number.

It is not a de Polignac number, because 423512069 - 2⁸ = 423511813 is a prime.

It is a super-2 number, since 2×423512069² = 358724945177321522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423512039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211756034 + 211756035.

It is an arithmetic number, because the mean of its divisors is an integer number (211756035).

Almost surely, 2^423512069 is an apocalyptic number.

It is an amenable number.

423512069 is a deficient number, since it is larger than the sum of its proper divisors (1).

423512069 is an equidigital number, since it uses as much as digits as its factorization.

423512069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 423512069 is about 20579.4088593429. The cubic root of 423512069 is about 750.9688628304.

The spelling of 423512069 in words is "four hundred twenty-three million, five hundred twelve thousand, sixty-nine".