320129959 has 2 divisors, whose sum is σ = 320129960. Its totient is φ = 320129958.

The previous prime is 320129947. The next prime is 320129977. The reversal of 320129959 is 959921023.

It is a weak prime.

It is an emirp because it is prime and its reverse (959921023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320129959 - 2¹¹ = 320127911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320129989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160064979 + 160064980.

It is an arithmetic number, because the mean of its divisors is an integer number (160064980).

Almost surely, 2^320129959 is an apocalyptic number.

320129959 is a deficient number, since it is larger than the sum of its proper divisors (1).

320129959 is an equidigital number, since it uses as much as digits as its factorization.

320129959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 320129959 is about 17892.1759157460. The cubic root of 320129959 is about 684.0829606236.

The spelling of 320129959 in words is "three hundred twenty million, one hundred twenty-nine thousand, nine hundred fifty-nine".