423675869 has 2 divisors, whose sum is σ = 423675870. Its totient is φ = 423675868.

The previous prime is 423675829. The next prime is 423675871. The reversal of 423675869 is 968576324.

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., 280562500 + 143113369 = 16750^2 + 11963^2 .

It is a cyclic number.

It is not a de Polignac number, because 423675869 - 2⁸ = 423675613 is a prime.

It is a super-2 number, since 2×423675869² = 359002483945810322, which contains 22 as substring.

Together with 423675871, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423675829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211837934 + 211837935.

It is an arithmetic number, because the mean of its divisors is an integer number (211837935).

Almost surely, 2^423675869 is an apocalyptic number.

It is an amenable number.

423675869 is a deficient number, since it is larger than the sum of its proper divisors (1).

423675869 is an equidigital number, since it uses as much as digits as its factorization.

423675869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 50.

The square root of 423675869 is about 20583.3881807636. The cubic root of 423675869 is about 751.0656667184.

The spelling of 423675869 in words is "four hundred twenty-three million, six hundred seventy-five thousand, eight hundred sixty-nine".