14478389 has 2 divisors, whose sum is σ = 14478390. Its totient is φ = 14478388.

The previous prime is 14478367. The next prime is 14478403. The reversal of 14478389 is 98387441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13359025 + 1119364 = 3655^2 + 1058^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14478389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14478349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7239194 + 7239195.

It is an arithmetic number, because the mean of its divisors is an integer number (7239195).

Almost surely, 2^14478389 is an apocalyptic number.

It is an amenable number.

14478389 is a deficient number, since it is larger than the sum of its proper divisors (1).

14478389 is an equidigital number, since it uses as much as digits as its factorization.

14478389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 44.

The square root of 14478389 is about 3805.0478314996. The cubic root of 14478389 is about 243.7287420427.

The spelling of 14478389 in words is "fourteen million, four hundred seventy-eight thousand, three hundred eighty-nine".