423602689 has 2 divisors, whose sum is σ = 423602690. Its totient is φ = 423602688.

The previous prime is 423602671. The next prime is 423602737. The reversal of 423602689 is 986206324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 243828225 + 179774464 = 15615^2 + 13408^2 .

It is a cyclic number.

It is not a de Polignac number, because 423602689 - 2⁷ = 423602561 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (423602629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211801344 + 211801345.

It is an arithmetic number, because the mean of its divisors is an integer number (211801345).

Almost surely, 2^423602689 is an apocalyptic number.

It is an amenable number.

423602689 is a deficient number, since it is larger than the sum of its proper divisors (1).

423602689 is an equidigital number, since it uses as much as digits as its factorization.

423602689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 423602689 is about 20581.6104569103. The cubic root of 423602689 is about 751.0224212767.

The spelling of 423602689 in words is "four hundred twenty-three million, six hundred two thousand, six hundred eighty-nine".