14228989 has 2 divisors, whose sum is σ = 14228990. Its totient is φ = 14228988.

The previous prime is 14228987. The next prime is 14228999. The reversal of 14228989 is 98982241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8265625 + 5963364 = 2875^2 + 2442^2 .

It is a cyclic number.

It is not a de Polignac number, because 14228989 - 2¹ = 14228987 is a prime.

Together with 14228987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14228987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7114494 + 7114495.

It is an arithmetic number, because the mean of its divisors is an integer number (7114495).

Almost surely, 2^14228989 is an apocalyptic number.

It is an amenable number.

14228989 is a deficient number, since it is larger than the sum of its proper divisors (1).

14228989 is an equidigital number, since it uses as much as digits as its factorization.

14228989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 43.

The square root of 14228989 is about 3772.1332160993. The cubic root of 14228989 is about 242.3211647786.

The spelling of 14228989 in words is "fourteen million, two hundred twenty-eight thousand, nine hundred eighty-nine".