423013289 has 2 divisors, whose sum is σ = 423013290. Its totient is φ = 423013288.

The previous prime is 423013219. The next prime is 423013291. The reversal of 423013289 is 982310324.

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., 323712064 + 99301225 = 17992^2 + 9965^2 .

It is a cyclic number.

It is not a de Polignac number, because 423013289 - 2²⁴ = 406236073 is a prime.

It is a Sophie Germain prime.

Together with 423013291, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (423013219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211506644 + 211506645.

It is an arithmetic number, because the mean of its divisors is an integer number (211506645).

Almost surely, 2^423013289 is an apocalyptic number.

It is an amenable number.

423013289 is a deficient number, since it is larger than the sum of its proper divisors (1).

423013289 is an equidigital number, since it uses as much as digits as its factorization.

423013289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 423013289 is about 20567.2868653111. The cubic root of 423013289 is about 750.6739358622.

The spelling of 423013289 in words is "four hundred twenty-three million, thirteen thousand, two hundred eighty-nine".