279494391179 has 2 divisors, whose sum is σ = 279494391180. Its totient is φ = 279494391178.

The previous prime is 279494391151. The next prime is 279494391227. The reversal of 279494391179 is 971193494972.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 279494391179 - 2³² = 275199423883 is a prime.

It is a super-2 number, since 2×279494391179² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (279494391139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139747195589 + 139747195590.

It is an arithmetic number, because the mean of its divisors is an integer number (139747195590).

Almost surely, 2^279494391179 is an apocalyptic number.

279494391179 is a deficient number, since it is larger than the sum of its proper divisors (1).

279494391179 is an equidigital number, since it uses as much as digits as its factorization.

279494391179 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30862944, while the sum is 65.

The spelling of 279494391179 in words is "two hundred seventy-nine billion, four hundred ninety-four million, three hundred ninety-one thousand, one hundred seventy-nine".