5279406689 has 2 divisors, whose sum is σ = 5279406690. Its totient is φ = 5279406688.

The previous prime is 5279406631. The next prime is 5279406701. The reversal of 5279406689 is 9866049725.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4758654289 + 520752400 = 68983^2 + 22820^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5279406689 is a prime.

It is not a weakly prime, because it can be changed into another prime (5279406619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2639703344 + 2639703345.

It is an arithmetic number, because the mean of its divisors is an integer number (2639703345).

Almost surely, 2^5279406689 is an apocalyptic number.

It is an amenable number.

5279406689 is a deficient number, since it is larger than the sum of its proper divisors (1).

5279406689 is an equidigital number, since it uses as much as digits as its factorization.

5279406689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The square root of 5279406689 is about 72659.5257966910. The cubic root of 5279406689 is about 1741.2523121268.

The spelling of 5279406689 in words is "five billion, two hundred seventy-nine million, four hundred six thousand, six hundred eighty-nine".