85444313 has 2 divisors, whose sum is σ = 85444314. Its totient is φ = 85444312.

The previous prime is 85444309. The next prime is 85444327. The reversal of 85444313 is 31344458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61512649 + 23931664 = 7843^2 + 4892^2 .

It is a cyclic number.

It is not a de Polignac number, because 85444313 - 2² = 85444309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85444313.

It is not a weakly prime, because it can be changed into another prime (85444013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42722156 + 42722157.

It is an arithmetic number, because the mean of its divisors is an integer number (42722157).

Almost surely, 2^85444313 is an apocalyptic number.

It is an amenable number.

85444313 is a deficient number, since it is larger than the sum of its proper divisors (1).

85444313 is an equidigital number, since it uses as much as digits as its factorization.

85444313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 32.

The square root of 85444313 is about 9243.6093058935. The cubic root of 85444313 is about 440.4477415402.

The spelling of 85444313 in words is "eighty-five million, four hundred forty-four thousand, three hundred thirteen".