423456853 has 2 divisors, whose sum is σ = 423456854. Its totient is φ = 423456852.

The previous prime is 423456833. The next prime is 423456863. The reversal of 423456853 is 358654324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 404733924 + 18722929 = 20118^2 + 4327^2 .

It is a cyclic number.

It is not a de Polignac number, because 423456853 - 2⁵ = 423456821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423456833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211728426 + 211728427.

It is an arithmetic number, because the mean of its divisors is an integer number (211728427).

Almost surely, 2^423456853 is an apocalyptic number.

It is an amenable number.

423456853 is a deficient number, since it is larger than the sum of its proper divisors (1).

423456853 is an equidigital number, since it uses as much as digits as its factorization.

423456853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 345600, while the sum is 40.

The square root of 423456853 is about 20578.0672804809. The cubic root of 423456853 is about 750.9362251939.

The spelling of 423456853 in words is "four hundred twenty-three million, four hundred fifty-six thousand, eight hundred fifty-three".