13087429 has 2 divisors, whose sum is σ = 13087430. Its totient is φ = 13087428.

The previous prime is 13087427. The next prime is 13087441. The reversal of 13087429 is 92478031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12040900 + 1046529 = 3470^2 + 1023^2 .

It is a cyclic number.

It is not a de Polignac number, because 13087429 - 2¹ = 13087427 is a prime.

Together with 13087427, it forms a pair of twin primes.

It is equal to p₈₅₄₅₃₉ and since 13087429 and 854539 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 13087394 and 13087403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13087421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6543714 + 6543715.

It is an arithmetic number, because the mean of its divisors is an integer number (6543715).

Almost surely, 2^13087429 is an apocalyptic number.

It is an amenable number.

13087429 is a deficient number, since it is larger than the sum of its proper divisors (1).

13087429 is an equidigital number, since it uses as much as digits as its factorization.

13087429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 13087429 is about 3617.6551798092. The cubic root of 13087429 is about 235.6594064727.

The spelling of 13087429 in words is "thirteen million, eighty-seven thousand, four hundred twenty-nine".