13340040397 has 6 divisors (see below), whose sum is σ = 13815904778. Its totient is φ = 12880038192.

The previous prime is 13340040379. The next prime is 13340040419. The reversal of 13340040397 is 79304004331.

It is a happy number.

13340040397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 212838921 + 13127201476 = 14589^2 + 114574^2 .

It is not a de Polignac number, because 13340040397 - 2¹⁹ = 13339516109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13340040997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7930218 + ... + 7931899.

Almost surely, 2^13340040397 is an apocalyptic number.

It is an amenable number.

13340040397 is a deficient number, since it is larger than the sum of its proper divisors (475864381).

13340040397 is an equidigital number, since it uses as much as digits as its factorization.

13340040397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15862175 (or 15862146 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 34.

The spelling of 13340040397 in words is "thirteen billion, three hundred forty million, forty thousand, three hundred ninety-seven".