879878761 has 2 divisors, whose sum is σ = 879878762. Its totient is φ = 879878760.

The previous prime is 879878729. The next prime is 879878803. The reversal of 879878761 is 167878978.

879878761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 721244736 + 158634025 = 26856^2 + 12595^2 .

It is a cyclic number.

It is not a de Polignac number, because 879878761 - 2⁵ = 879878729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 879878761.

It is not a weakly prime, because it can be changed into another prime (879872761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439939380 + 439939381.

It is an arithmetic number, because the mean of its divisors is an integer number (439939381).

Almost surely, 2^879878761 is an apocalyptic number.

It is an amenable number.

879878761 is a deficient number, since it is larger than the sum of its proper divisors (1).

879878761 is an equidigital number, since it uses as much as digits as its factorization.

879878761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9483264, while the sum is 61.

The square root of 879878761 is about 29662.7503950662. The cubic root of 879878761 is about 958.2399612890.

The spelling of 879878761 in words is "eight hundred seventy-nine million, eight hundred seventy-eight thousand, seven hundred sixty-one".