4223519 has 2 divisors, whose sum is σ = 4223520. Its totient is φ = 4223518.

The previous prime is 4223509. The next prime is 4223521. The reversal of 4223519 is 9153224.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4223519 is a prime.

It is a super-2 number, since 2×4223519² = 35676225486722, which contains 22 as substring.

Together with 4223521, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4223509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2111759 + 2111760.

It is an arithmetic number, because the mean of its divisors is an integer number (2111760).

Almost surely, 2^4223519 is an apocalyptic number.

4223519 is a deficient number, since it is larger than the sum of its proper divisors (1).

4223519 is an equidigital number, since it uses as much as digits as its factorization.

4223519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

The square root of 4223519 is about 2055.1201911324. The cubic root of 4223519 is about 161.6434647446.

The spelling of 4223519 in words is "four million, two hundred twenty-three thousand, five hundred nineteen".