13487443 has 4 divisors (see below), whose sum is σ = 14280840. Its totient is φ = 12694048.

The previous prime is 13487437. The next prime is 13487447. The reversal of 13487443 is 34478431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13487443 is a prime.

It is a super-2 number, since 2×13487443² = 363822237356498, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13487399 and 13487408.

It is not an unprimeable number, because it can be changed into a prime (13487447) 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, 396673 + ... + 396706.

It is an arithmetic number, because the mean of its divisors is an integer number (3570210).

Almost surely, 2^13487443 is an apocalyptic number.

13487443 is a deficient number, since it is larger than the sum of its proper divisors (793397).

13487443 is an equidigital number, since it uses as much as digits as its factorization.

13487443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793396.

The product of its digits is 32256, while the sum is 34.

The square root of 13487443 is about 3672.5254253715. The cubic root of 13487443 is about 238.0363089863.

The spelling of 13487443 in words is "thirteen million, four hundred eighty-seven thousand, four hundred forty-three".