879945667 has 2 divisors, whose sum is σ = 879945668. Its totient is φ = 879945666.

The previous prime is 879945607. The next prime is 879945683. The reversal of 879945667 is 766549978.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-879945667 is a prime.

It is not a weakly prime, because it can be changed into another prime (879945607) 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, 439972833 + 439972834.

It is an arithmetic number, because the mean of its divisors is an integer number (439972834).

Almost surely, 2^879945667 is an apocalyptic number.

879945667 is a deficient number, since it is larger than the sum of its proper divisors (1).

879945667 is an equidigital number, since it uses as much as digits as its factorization.

879945667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22861440, while the sum is 61.

The square root of 879945667 is about 29663.8781517185. The cubic root of 879945667 is about 958.2642488691.

The spelling of 879945667 in words is "eight hundred seventy-nine million, nine hundred forty-five thousand, six hundred sixty-seven".