4539739 has 2 divisors, whose sum is σ = 4539740. Its totient is φ = 4539738.

The previous prime is 4539737. The next prime is 4539749. The reversal of 4539739 is 9379354.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4539739 - 2¹ = 4539737 is a prime.

Together with 4539737, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4539737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2269869 + 2269870.

It is an arithmetic number, because the mean of its divisors is an integer number (2269870).

Almost surely, 2^4539739 is an apocalyptic number.

4539739 is a deficient number, since it is larger than the sum of its proper divisors (1).

4539739 is an equidigital number, since it uses as much as digits as its factorization.

4539739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102060, while the sum is 40.

The square root of 4539739 is about 2130.6663277013. Note that the first 3 decimals coincide. The cubic root of 4539739 is about 165.5809214137.

The spelling of 4539739 in words is "four million, five hundred thirty-nine thousand, seven hundred thirty-nine".