13087139 has 8 divisors (see below), whose sum is σ = 14124432. Its totient is φ = 12054240.

The previous prime is 13087111. The next prime is 13087153. The reversal of 13087139 is 93178031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13087139 - 2⁸ = 13086883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13087169) 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 in 7 ways as a sum of consecutive naturals, for example, 7832 + ... + 9354.

It is an arithmetic number, because the mean of its divisors is an integer number (1765554).

Almost surely, 2^13087139 is an apocalyptic number.

13087139 is a deficient number, since it is larger than the sum of its proper divisors (1037293).

13087139 is a wasteful number, since it uses less digits than its factorization.

13087139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 13087139 is about 3617.6150983763. The cubic root of 13087139 is about 235.6576658270.

The spelling of 13087139 in words is "thirteen million, eighty-seven thousand, one hundred thirty-nine".