13400012909 has 2 divisors, whose sum is σ = 13400012910. Its totient is φ = 13400012908.

The previous prime is 13400012897. The next prime is 13400012921. The reversal of 13400012909 is 90921000431.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (13400012897) and next prime (13400012921).

It can be written as a sum of positive squares in only one way, i.e., 11491196809 + 1908816100 = 107197^2 + 43690^2 .

It is a cyclic number.

It is not a de Polignac number, because 13400012909 - 2²⁸ = 13131577453 is a prime.

It is a super-2 number, since 2×13400012909² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13400012929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6700006454 + 6700006455.

It is an arithmetic number, because the mean of its divisors is an integer number (6700006455).

Almost surely, 2^13400012909 is an apocalyptic number.

It is an amenable number.

13400012909 is a deficient number, since it is larger than the sum of its proper divisors (1).

13400012909 is an equidigital number, since it uses as much as digits as its factorization.

13400012909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 13400012909 in words is "thirteen billion, four hundred million, twelve thousand, nine hundred nine".