320009441 has 2 divisors, whose sum is σ = 320009442. Its totient is φ = 320009440.

The previous prime is 320009429. The next prime is 320009447. The reversal of 320009441 is 144900023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205091041 + 114918400 = 14321^2 + 10720^2 .

It is a cyclic number.

It is not a de Polignac number, because 320009441 - 2¹⁸ = 319747297 is a prime.

It is not a weakly prime, because it can be changed into another prime (320009447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160004720 + 160004721.

It is an arithmetic number, because the mean of its divisors is an integer number (160004721).

Almost surely, 2^320009441 is an apocalyptic number.

It is an amenable number.

320009441 is a deficient number, since it is larger than the sum of its proper divisors (1).

320009441 is an equidigital number, since it uses as much as digits as its factorization.

320009441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 320009441 is about 17888.8077020242. The cubic root of 320009441 is about 683.9971052224.

Adding to 320009441 its reverse (144900023), we get a palindrome (464909464).

The spelling of 320009441 in words is "three hundred twenty million, nine thousand, four hundred forty-one".