13403040949 has 2 divisors, whose sum is σ = 13403040950. Its totient is φ = 13403040948.

The previous prime is 13403040947. The next prime is 13403041019. The reversal of 13403040949 is 94904030431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13074779025 + 328261924 = 114345^2 + 18118^2 .

It is a cyclic number.

It is not a de Polignac number, because 13403040949 - 2¹ = 13403040947 is a prime.

Together with 13403040947, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13403040947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6701520474 + 6701520475.

It is an arithmetic number, because the mean of its divisors is an integer number (6701520475).

Almost surely, 2^13403040949 is an apocalyptic number.

It is an amenable number.

13403040949 is a deficient number, since it is larger than the sum of its proper divisors (1).

13403040949 is an equidigital number, since it uses as much as digits as its factorization.

13403040949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 37.

The spelling of 13403040949 in words is "thirteen billion, four hundred three million, forty thousand, nine hundred forty-nine".