2539789729 has 2 divisors, whose sum is σ = 2539789730. Its totient is φ = 2539789728.

The previous prime is 2539789709. The next prime is 2539789739. The reversal of 2539789729 is 9279879352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2522550625 + 17239104 = 50225^2 + 4152^2 .

It is a cyclic number.

It is not a de Polignac number, because 2539789729 - 2¹³ = 2539781537 is a prime.

It is not a weakly prime, because it can be changed into another prime (2539789709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1269894864 + 1269894865.

It is an arithmetic number, because the mean of its divisors is an integer number (1269894865).

Almost surely, 2^2539789729 is an apocalyptic number.

It is an amenable number.

2539789729 is a deficient number, since it is larger than the sum of its proper divisors (1).

2539789729 is an equidigital number, since it uses as much as digits as its factorization.

2539789729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17146080, while the sum is 61.

The square root of 2539789729 is about 50396.3265427154. The cubic root of 2539789729 is about 1364.3713383768.

The spelling of 2539789729 in words is "two billion, five hundred thirty-nine million, seven hundred eighty-nine thousand, seven hundred twenty-nine".