320966249 has 2 divisors, whose sum is σ = 320966250. Its totient is φ = 320966248.

The previous prime is 320966207. The next prime is 320966257. The reversal of 320966249 is 942669023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184824025 + 136142224 = 13595^2 + 11668^2 .

It is a cyclic number.

It is not a de Polignac number, because 320966249 - 2¹² = 320962153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (320966299) 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, 160483124 + 160483125.

It is an arithmetic number, because the mean of its divisors is an integer number (160483125).

Almost surely, 2^320966249 is an apocalyptic number.

It is an amenable number.

320966249 is a deficient number, since it is larger than the sum of its proper divisors (1).

320966249 is an equidigital number, since it uses as much as digits as its factorization.

320966249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 320966249 is about 17915.5309438487. The cubic root of 320966249 is about 684.6781296352.

The spelling of 320966249 in words is "three hundred twenty million, nine hundred sixty-six thousand, two hundred forty-nine".