13987033 has 4 divisors (see below), whose sum is σ = 13995520. Its totient is φ = 13978548.

The previous prime is 13987007. The next prime is 13987049. The reversal of 13987033 is 33078931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13987033 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13987033.

It is not an unprimeable number, because it can be changed into a prime (13987063) 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, 885 + ... + 5362.

It is an arithmetic number, because the mean of its divisors is an integer number (3498880).

Almost surely, 2^13987033 is an apocalyptic number.

It is an amenable number.

13987033 is a deficient number, since it is larger than the sum of its proper divisors (8487).

13987033 is an equidigital number, since it uses as much as digits as its factorization.

13987033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8486.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 13987033 is about 3739.9241970928. The cubic root of 13987033 is about 240.9397931592.

The spelling of 13987033 in words is "thirteen million, nine hundred eighty-seven thousand, thirty-three".