13400441987 has 2 divisors, whose sum is σ = 13400441988. Its totient is φ = 13400441986.

The previous prime is 13400441983. The next prime is 13400442001. The reversal of 13400441987 is 78914400431.

It is a weak prime.

It is an emirp because it is prime and its reverse (78914400431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13400441987 - 2² = 13400441983 is a prime.

It is not a weakly prime, because it can be changed into another prime (13400441983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6700220993 + 6700220994.

It is an arithmetic number, because the mean of its divisors is an integer number (6700220994).

Almost surely, 2^13400441987 is an apocalyptic number.

13400441987 is a deficient number, since it is larger than the sum of its proper divisors (1).

13400441987 is an equidigital number, since it uses as much as digits as its factorization.

13400441987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 13400441987 in words is "thirteen billion, four hundred million, four hundred forty-one thousand, nine hundred eighty-seven".