4539823 has 2 divisors, whose sum is σ = 4539824. Its totient is φ = 4539822.

The previous prime is 4539817. The next prime is 4539827. The reversal of 4539823 is 3289354.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4539823 - 2⁵ = 4539791 is a prime.

4539823 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4539827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2269911 + 2269912.

It is an arithmetic number, because the mean of its divisors is an integer number (2269912).

Almost surely, 2^4539823 is an apocalyptic number.

4539823 is a deficient number, since it is larger than the sum of its proper divisors (1).

4539823 is an equidigital number, since it uses as much as digits as its factorization.

4539823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 34.

The square root of 4539823 is about 2130.6860397534. The cubic root of 4539823 is about 165.5819426700.

The spelling of 4539823 in words is "four million, five hundred thirty-nine thousand, eight hundred twenty-three".