13988517 has 8 divisors (see below), whose sum is σ = 18673824. Its totient is φ = 9314448.

The previous prime is 13988477. The next prime is 13988521. The reversal of 13988517 is 71588931.

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

It is not a de Polignac number, because 13988517 - 2⁶ = 13988453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13988537) 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, 738 + ... + 5340.

It is an arithmetic number, because the mean of its divisors is an integer number (2334228).

Almost surely, 2^13988517 is an apocalyptic number.

It is an amenable number.

13988517 is a deficient number, since it is larger than the sum of its proper divisors (4685307).

13988517 is a wasteful number, since it uses less digits than its factorization.

13988517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5619.

The product of its digits is 60480, while the sum is 42.

The square root of 13988517 is about 3740.1225915737. The cubic root of 13988517 is about 240.9483139563.

The spelling of 13988517 in words is "thirteen million, nine hundred eighty-eight thousand, five hundred seventeen".