423927719 has 2 divisors, whose sum is σ = 423927720. Its totient is φ = 423927718.

The previous prime is 423927703. The next prime is 423927769. The reversal of 423927719 is 917729324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423927719 - 2⁴ = 423927703 is a prime.

It is a super-2 number, since 2×423927719² = 359429421873085922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 423927719.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423927769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211963859 + 211963860.

It is an arithmetic number, because the mean of its divisors is an integer number (211963860).

Almost surely, 2^423927719 is an apocalyptic number.

423927719 is a deficient number, since it is larger than the sum of its proper divisors (1).

423927719 is an equidigital number, since it uses as much as digits as its factorization.

423927719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 44.

The square root of 423927719 is about 20589.5050693308. The cubic root of 423927719 is about 751.2144584668.

The spelling of 423927719 in words is "four hundred twenty-three million, nine hundred twenty-seven thousand, seven hundred nineteen".