13000987 has 2 divisors, whose sum is σ = 13000988. Its totient is φ = 13000986.

The previous prime is 13000979. The next prime is 13000993. The reversal of 13000987 is 78900031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13000987 - 2³ = 13000979 is a prime.

It is not a weakly prime, because it can be changed into another prime (13000187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6500493 + 6500494.

It is an arithmetic number, because the mean of its divisors is an integer number (6500494).

Almost surely, 2^13000987 is an apocalyptic number.

13000987 is a deficient number, since it is larger than the sum of its proper divisors (1).

13000987 is an equidigital number, since it uses as much as digits as its factorization.

13000987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 13000987 is about 3605.6881451396. The cubic root of 13000987 is about 235.1394193070.

The spelling of 13000987 in words is "thirteen million, nine hundred eighty-seven", and thus it is an aban number.