13987003 has 4 divisors (see below), whose sum is σ = 13996000. Its totient is φ = 13978008.

The previous prime is 13986977. The next prime is 13987007. The reversal of 13987003 is 30078931.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 30078931 = 53 ⋅567527.

It is a cyclic number.

It is not a de Polignac number, because 13987003 - 2¹⁷ = 13855931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13987007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1500 + ... + 5497.

It is an arithmetic number, because the mean of its divisors is an integer number (3499000).

Almost surely, 2^13987003 is an apocalyptic number.

13987003 is a deficient number, since it is larger than the sum of its proper divisors (8997).

13987003 is an equidigital number, since it uses as much as digits as its factorization.

13987003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8996.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 13987003 is about 3739.9201863141. The cubic root of 13987003 is about 240.9396208997.

The spelling of 13987003 in words is "thirteen million, nine hundred eighty-seven thousand, three".