4539809459 has 2 divisors, whose sum is σ = 4539809460. Its totient is φ = 4539809458.

The previous prime is 4539809453. The next prime is 4539809507. The reversal of 4539809459 is 9549089354.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4539809459 - 2⁸ = 4539809203 is a prime.

It is not a weakly prime, because it can be changed into another prime (4539809453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2269904729 + 2269904730.

It is an arithmetic number, because the mean of its divisors is an integer number (2269904730).

Almost surely, 2^4539809459 is an apocalyptic number.

4539809459 is a deficient number, since it is larger than the sum of its proper divisors (1).

4539809459 is an equidigital number, since it uses as much as digits as its factorization.

4539809459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6998400, while the sum is 56.

The square root of 4539809459 is about 67378.1081583625. The cubic root of 4539809459 is about 1655.8177804189.

The spelling of 4539809459 in words is "four billion, five hundred thirty-nine million, eight hundred nine thousand, four hundred fifty-nine".