13439534003989 has 2 divisors, whose sum is σ = 13439534003990. Its totient is φ = 13439534003988.

The previous prime is 13439534003983. The next prime is 13439534004011. The reversal of 13439534003989 is 98930043593431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8387783291889 + 5051750712100 = 2896167^2 + 2247610^2 .

It is a cyclic number.

It is not a de Polignac number, because 13439534003989 - 2³ = 13439534003981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13439534003981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6719767001994 + 6719767001995.

It is an arithmetic number, because the mean of its divisors is an integer number (6719767001995).

Almost surely, 2^{13439534003989} is an apocalyptic number.

It is an amenable number.

13439534003989 is a deficient number, since it is larger than the sum of its proper divisors (1).

13439534003989 is an equidigital number, since it uses as much as digits as its factorization.

13439534003989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37791360, while the sum is 61.

The spelling of 13439534003989 in words is "thirteen trillion, four hundred thirty-nine billion, five hundred thirty-four million, three thousand, nine hundred eighty-nine".