13400334391 has 2 divisors, whose sum is σ = 13400334392. Its totient is φ = 13400334390.

The previous prime is 13400334347. The next prime is 13400334461. The reversal of 13400334391 is 19343300431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13400334391 - 2¹⁹ = 13399810103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13400334331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6700167195 + 6700167196.

It is an arithmetic number, because the mean of its divisors is an integer number (6700167196).

Almost surely, 2^13400334391 is an apocalyptic number.

13400334391 is a deficient number, since it is larger than the sum of its proper divisors (1).

13400334391 is an equidigital number, since it uses as much as digits as its factorization.

13400334391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 31.

The spelling of 13400334391 in words is "thirteen billion, four hundred million, three hundred thirty-four thousand, three hundred ninety-one".