2539000909 has 2 divisors, whose sum is σ = 2539000910. Its totient is φ = 2539000908.

The previous prime is 2539000903. The next prime is 2539000921. The reversal of 2539000909 is 9090009352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2485022500 + 53978409 = 49850^2 + 7347^2 .

It is a cyclic number.

It is not a de Polignac number, because 2539000909 - 2⁹ = 2539000397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2539000903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1269500454 + 1269500455.

It is an arithmetic number, because the mean of its divisors is an integer number (1269500455).

Almost surely, 2^2539000909 is an apocalyptic number.

It is an amenable number.

2539000909 is a deficient number, since it is larger than the sum of its proper divisors (1).

2539000909 is an equidigital number, since it uses as much as digits as its factorization.

2539000909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21870, while the sum is 37.

The square root of 2539000909 is about 50388.4997692926. The cubic root of 2539000909 is about 1364.2300727663.

The spelling of 2539000909 in words is "two billion, five hundred thirty-nine million, nine hundred nine", and thus it is an aban number.