13989229 has 2 divisors, whose sum is σ = 13989230. Its totient is φ = 13989228.

The previous prime is 13989193. The next prime is 13989253. The reversal of 13989229 is 92298931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8277129 + 5712100 = 2877^2 + 2390^2 .

It is a cyclic number.

It is not a de Polignac number, because 13989229 - 2¹⁷ = 13858157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13989289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6994614 + 6994615.

It is an arithmetic number, because the mean of its divisors is an integer number (6994615).

Almost surely, 2^13989229 is an apocalyptic number.

It is an amenable number.

13989229 is a deficient number, since it is larger than the sum of its proper divisors (1).

13989229 is an equidigital number, since it uses as much as digits as its factorization.

13989229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 43.

The square root of 13989229 is about 3740.2177744083. The cubic root of 13989229 is about 240.9524018876.

It can be divided in two parts, 1398922 and 9, that added together give a palindrome (1398931).

The spelling of 13989229 in words is "thirteen million, nine hundred eighty-nine thousand, two hundred twenty-nine".