14381989 has 2 divisors, whose sum is σ = 14381990. Its totient is φ = 14381988.

The previous prime is 14381987. The next prime is 14382001. The reversal of 14381989 is 98918341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7317025 + 7064964 = 2705^2 + 2658^2 .

It is an emirp because it is prime and its reverse (98918341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14381989 - 2¹ = 14381987 is a prime.

It is a super-2 number, since 2×14381989² = 413683215192242, which contains 22 as substring.

Together with 14381987, 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 (14381987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7190994 + 7190995.

It is an arithmetic number, because the mean of its divisors is an integer number (7190995).

Almost surely, 2^14381989 is an apocalyptic number.

It is an amenable number.

14381989 is a deficient number, since it is larger than the sum of its proper divisors (1).

14381989 is an equidigital number, since it uses as much as digits as its factorization.

14381989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 43.

The square root of 14381989 is about 3792.3592920503. The cubic root of 14381989 is about 243.1866055228.

The spelling of 14381989 in words is "fourteen million, three hundred eighty-one thousand, nine hundred eighty-nine".