13840003 has 2 divisors, whose sum is σ = 13840004. Its totient is φ = 13840002.

The previous prime is 13839983. The next prime is 13840033. The reversal of 13840003 is 30004831.

13840003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (30004831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13840003 - 2⁵ = 13839971 is a prime.

It is not a weakly prime, because it can be changed into another prime (13840033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6920001 + 6920002.

It is an arithmetic number, because the mean of its divisors is an integer number (6920002).

Almost surely, 2^13840003 is an apocalyptic number.

13840003 is a deficient number, since it is larger than the sum of its proper divisors (1).

13840003 is an equidigital number, since it uses as much as digits as its factorization.

13840003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 13840003 is about 3720.2154507501. The cubic root of 13840003 is about 240.0925742408.

Adding to 13840003 its reverse (30004831), we get a palindrome (43844834).

The spelling of 13840003 in words is "thirteen million, eight hundred forty thousand, three".