13990043 has 2 divisors, whose sum is σ = 13990044. Its totient is φ = 13990042.

The previous prime is 13990013. The next prime is 13990073. The reversal of 13990043 is 34009931.

It is a balanced prime because it is at equal distance from previous prime (13990013) and next prime (13990073).

It is an emirp because it is prime and its reverse (34009931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13990043 - 2¹⁶ = 13924507 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13989988 and 13990015.

It is not a weakly prime, because it can be changed into another prime (13990013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6995021 + 6995022.

It is an arithmetic number, because the mean of its divisors is an integer number (6995022).

Almost surely, 2^13990043 is an apocalyptic number.

13990043 is a deficient number, since it is larger than the sum of its proper divisors (1).

13990043 is an equidigital number, since it uses as much as digits as its factorization.

13990043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 13990043 is about 3740.3265900186. The cubic root of 13990043 is about 240.9570752795.

Adding to 13990043 its reverse (34009931), we get a palindrome (47999974).

The spelling of 13990043 in words is "thirteen million, nine hundred ninety thousand, forty-three".