5278439 has 2 divisors, whose sum is σ = 5278440. Its totient is φ = 5278438.

The previous prime is 5278423. The next prime is 5278451. The reversal of 5278439 is 9348725.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5278439 - 2⁴ = 5278423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5278459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2639219 + 2639220.

It is an arithmetic number, because the mean of its divisors is an integer number (2639220).

Almost surely, 2^5278439 is an apocalyptic number.

5278439 is a deficient number, since it is larger than the sum of its proper divisors (1).

5278439 is an equidigital number, since it uses as much as digits as its factorization.

5278439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 38.

The square root of 5278439 is about 2297.4853644800. The cubic root of 5278439 is about 174.1145917995.

The spelling of 5278439 in words is "five million, two hundred seventy-eight thousand, four hundred thirty-nine".