679159289 has 2 divisors, whose sum is σ = 679159290. Its totient is φ = 679159288.

The previous prime is 679159171. The next prime is 679159291. The reversal of 679159289 is 982951976.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 636805225 + 42354064 = 25235^2 + 6508^2 .

It is a cyclic number.

It is not a de Polignac number, because 679159289 - 2¹² = 679155193 is a prime.

It is a super-2 number, since 2×679159289² = 922514679669971042, which contains 22 as substring.

Together with 679159291, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (679155289) 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, 339579644 + 339579645.

It is an arithmetic number, because the mean of its divisors is an integer number (339579645).

Almost surely, 2^679159289 is an apocalyptic number.

It is an amenable number.

679159289 is a deficient number, since it is larger than the sum of its proper divisors (1).

679159289 is an equidigital number, since it uses as much as digits as its factorization.

679159289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2449440, while the sum is 56.

The square root of 679159289 is about 26060.6847377424. The cubic root of 679159289 is about 879.0033866396.

The spelling of 679159289 in words is "six hundred seventy-nine million, one hundred fifty-nine thousand, two hundred eighty-nine".