879317977 has 2 divisors, whose sum is σ = 879317978. Its totient is φ = 879317976.

The previous prime is 879317951. The next prime is 879317993. The reversal of 879317977 is 779713978.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 568536336 + 310781641 = 23844^2 + 17629^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-879317977 is a prime.

It is not a weakly prime, because it can be changed into another prime (879317377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439658988 + 439658989.

It is an arithmetic number, because the mean of its divisors is an integer number (439658989).

Almost surely, 2^879317977 is an apocalyptic number.

It is an amenable number.

879317977 is a deficient number, since it is larger than the sum of its proper divisors (1).

879317977 is an equidigital number, since it uses as much as digits as its factorization.

879317977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4667544, while the sum is 58.

The square root of 879317977 is about 29653.2962248719. The cubic root of 879317977 is about 958.0363423872.

The spelling of 879317977 in words is "eight hundred seventy-nine million, three hundred seventeen thousand, nine hundred seventy-seven".