4520239 has 2 divisors, whose sum is σ = 4520240. Its totient is φ = 4520238.

The previous prime is 4520237. The next prime is 4520261. The reversal of 4520239 is 9320254.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4520239 - 2¹ = 4520237 is a prime.

Together with 4520237, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4520237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2260119 + 2260120.

It is an arithmetic number, because the mean of its divisors is an integer number (2260120).

Almost surely, 2^4520239 is an apocalyptic number.

4520239 is a deficient number, since it is larger than the sum of its proper divisors (1).

4520239 is an equidigital number, since it uses as much as digits as its factorization.

4520239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 4520239 is about 2126.0853698758. The cubic root of 4520239 is about 165.3435023265.

The spelling of 4520239 in words is "four million, five hundred twenty thousand, two hundred thirty-nine".