423539219 has 2 divisors, whose sum is σ = 423539220. Its totient is φ = 423539218.

The previous prime is 423539213. The next prime is 423539243. The reversal of 423539219 is 912935324.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423539219 - 2¹⁶ = 423473683 is a prime.

It is a super-2 number, since 2×423539219² = 358770940062259922, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (423539213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211769609 + 211769610.

It is an arithmetic number, because the mean of its divisors is an integer number (211769610).

Almost surely, 2^423539219 is an apocalyptic number.

423539219 is a deficient number, since it is larger than the sum of its proper divisors (1).

423539219 is an equidigital number, since it uses as much as digits as its factorization.

423539219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 38.

The square root of 423539219 is about 20580.0684887101. The cubic root of 423539219 is about 750.9849098890.

The spelling of 423539219 in words is "four hundred twenty-three million, five hundred thirty-nine thousand, two hundred nineteen".