13994039009 has 2 divisors, whose sum is σ = 13994039010. Its totient is φ = 13994039008.

The previous prime is 13994038999. The next prime is 13994039021. The reversal of 13994039009 is 90093049931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12077350609 + 1916688400 = 109897^2 + 43780^2 .

It is a cyclic number.

It is not a de Polignac number, because 13994039009 - 2¹² = 13994034913 is a prime.

It is not a weakly prime, because it can be changed into another prime (13994039509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6997019504 + 6997019505.

It is an arithmetic number, because the mean of its divisors is an integer number (6997019505).

Almost surely, 2^13994039009 is an apocalyptic number.

It is an amenable number.

13994039009 is a deficient number, since it is larger than the sum of its proper divisors (1).

13994039009 is an equidigital number, since it uses as much as digits as its factorization.

13994039009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 236196, while the sum is 47.

The spelling of 13994039009 in words is "thirteen billion, nine hundred ninety-four million, thirty-nine thousand, nine".