279379679 has 2 divisors, whose sum is σ = 279379680. Its totient is φ = 279379678.

The previous prime is 279379651. The next prime is 279379693. The reversal of 279379679 is 976973972.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 279379679 - 2¹² = 279375583 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (279369679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139689839 + 139689840.

It is an arithmetic number, because the mean of its divisors is an integer number (139689840).

Almost surely, 2^279379679 is an apocalyptic number.

279379679 is a deficient number, since it is larger than the sum of its proper divisors (1).

279379679 is an equidigital number, since it uses as much as digits as its factorization.

279379679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9001692, while the sum is 59.

The square root of 279379679 is about 16714.6546180291. The cubic root of 279379679 is about 653.7297831272.

The spelling of 279379679 in words is "two hundred seventy-nine million, three hundred seventy-nine thousand, six hundred seventy-nine".