879649297 has 2 divisors, whose sum is σ = 879649298. Its totient is φ = 879649296.

The previous prime is 879649261. The next prime is 879649367. The reversal of 879649297 is 792946978.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 508547601 + 371101696 = 22551^2 + 19264^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-879649297 is a prime.

It is not a weakly prime, because it can be changed into another prime (879649597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439824648 + 439824649.

It is an arithmetic number, because the mean of its divisors is an integer number (439824649).

Almost surely, 2^879649297 is an apocalyptic number.

It is an amenable number.

879649297 is a deficient number, since it is larger than the sum of its proper divisors (1).

879649297 is an equidigital number, since it uses as much as digits as its factorization.

879649297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13716864, while the sum is 61.

The square root of 879649297 is about 29658.8822614744. The cubic root of 879649297 is about 958.1566540951.

The spelling of 879649297 in words is "eight hundred seventy-nine million, six hundred forty-nine thousand, two hundred ninety-seven".