13988189 has 2 divisors, whose sum is σ = 13988190. Its totient is φ = 13988188.

The previous prime is 13988173. The next prime is 13988203. The reversal of 13988189 is 98188931.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13935289 + 52900 = 3733^2 + 230^2 .

It is an emirp because it is prime and its reverse (98188931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13988189 - 2⁴ = 13988173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13988119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6994094 + 6994095.

It is an arithmetic number, because the mean of its divisors is an integer number (6994095).

Almost surely, 2^13988189 is an apocalyptic number.

It is an amenable number.

13988189 is a deficient number, since it is larger than the sum of its proper divisors (1).

13988189 is an equidigital number, since it uses as much as digits as its factorization.

13988189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 47.

The square root of 13988189 is about 3740.0787424866. The cubic root of 13988189 is about 240.9464307053.

The spelling of 13988189 in words is "thirteen million, nine hundred eighty-eight thousand, one hundred eighty-nine".