314778439 has 2 divisors, whose sum is σ = 314778440. Its totient is φ = 314778438.

The previous prime is 314778389. The next prime is 314778449. The reversal of 314778439 is 934877413.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 314778439 - 2¹¹ = 314776391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (314778449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157389219 + 157389220.

It is an arithmetic number, because the mean of its divisors is an integer number (157389220).

Almost surely, 2^314778439 is an apocalyptic number.

314778439 is a deficient number, since it is larger than the sum of its proper divisors (1).

314778439 is an equidigital number, since it uses as much as digits as its factorization.

314778439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 46.

The square root of 314778439 is about 17741.9964772852. The cubic root of 314778439 is about 680.2496480991.

The spelling of 314778439 in words is "three hundred fourteen million, seven hundred seventy-eight thousand, four hundred thirty-nine".