879520321 has 2 divisors, whose sum is σ = 879520322. Its totient is φ = 879520320.

The previous prime is 879520307. The next prime is 879520349. The reversal of 879520321 is 123025978.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 770839696 + 108680625 = 27764^2 + 10425^2 .

It is a cyclic number.

It is not a de Polignac number, because 879520321 - 2²⁵ = 845965889 is a prime.

It is not a weakly prime, because it can be changed into another prime (879520361) 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, 439760160 + 439760161.

It is an arithmetic number, because the mean of its divisors is an integer number (439760161).

Almost surely, 2^879520321 is an apocalyptic number.

It is an amenable number.

879520321 is a deficient number, since it is larger than the sum of its proper divisors (1).

879520321 is an equidigital number, since it uses as much as digits as its factorization.

879520321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 879520321 is about 29656.7078584256. The cubic root of 879520321 is about 958.1098228358.

The spelling of 879520321 in words is "eight hundred seventy-nine million, five hundred twenty thousand, three hundred twenty-one".