879278077 has 2 divisors, whose sum is σ = 879278078. Its totient is φ = 879278076.

The previous prime is 879278041. The next prime is 879278089. The reversal of 879278077 is 770872978.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 802645561 + 76632516 = 28331^2 + 8754^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-879278077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (879273077) 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, 439639038 + 439639039.

It is an arithmetic number, because the mean of its divisors is an integer number (439639039).

Almost surely, 2^879278077 is an apocalyptic number.

It is an amenable number.

879278077 is a deficient number, since it is larger than the sum of its proper divisors (1).

879278077 is an equidigital number, since it uses as much as digits as its factorization.

879278077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2765952, while the sum is 55.

The square root of 879278077 is about 29652.6234421172. The cubic root of 879278077 is about 958.0218515245.

The spelling of 879278077 in words is "eight hundred seventy-nine million, two hundred seventy-eight thousand, seventy-seven".