279045671 has 2 divisors, whose sum is σ = 279045672. Its totient is φ = 279045670.

The previous prime is 279045653. The next prime is 279045673. The reversal of 279045671 is 176540972.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-279045671 is a prime.

Together with 279045673, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (279045673) 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, 139522835 + 139522836.

It is an arithmetic number, because the mean of its divisors is an integer number (139522836).

Almost surely, 2^279045671 is an apocalyptic number.

279045671 is a deficient number, since it is larger than the sum of its proper divisors (1).

279045671 is an equidigital number, since it uses as much as digits as its factorization.

279045671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 279045671 is about 16704.6601581714. The cubic root of 279045671 is about 653.4691604369.

The spelling of 279045671 in words is "two hundred seventy-nine million, forty-five thousand, six hundred seventy-one".