423420589 has 2 divisors, whose sum is σ = 423420590. Its totient is φ = 423420588.

The previous prime is 423420541. The next prime is 423420631. The reversal of 423420589 is 985024324.

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., 378302500 + 45118089 = 19450^2 + 6717^2 .

It is a cyclic number.

It is not a de Polignac number, because 423420589 - 2⁷ = 423420461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423420539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211710294 + 211710295.

It is an arithmetic number, because the mean of its divisors is an integer number (211710295).

Almost surely, 2^423420589 is an apocalyptic number.

It is an amenable number.

423420589 is a deficient number, since it is larger than the sum of its proper divisors (1).

423420589 is an equidigital number, since it uses as much as digits as its factorization.

423420589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 423420589 is about 20577.1861293035. The cubic root of 423420589 is about 750.9147883553.

The spelling of 423420589 in words is "four hundred twenty-three million, four hundred twenty thousand, five hundred eighty-nine".