14478381439 has 2 divisors, whose sum is σ = 14478381440. Its totient is φ = 14478381438.

The previous prime is 14478381431. The next prime is 14478381469. The reversal of 14478381439 is 93418387441.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 14478381439 - 2³ = 14478381431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14478381431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7239190719 + 7239190720.

It is an arithmetic number, because the mean of its divisors is an integer number (7239190720).

Almost surely, 2^14478381439 is an apocalyptic number.

14478381439 is a deficient number, since it is larger than the sum of its proper divisors (1).

14478381439 is an equidigital number, since it uses as much as digits as its factorization.

14478381439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2322432, while the sum is 52.

The spelling of 14478381439 in words is "fourteen billion, four hundred seventy-eight million, three hundred eighty-one thousand, four hundred thirty-nine".