959323921 has 2 divisors, whose sum is σ = 959323922. Its totient is φ = 959323920.

The previous prime is 959323919. The next prime is 959323931. The reversal of 959323921 is 129323959.

959323921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 625750225 + 333573696 = 25015^2 + 18264^2 .

It is an emirp because it is prime and its reverse (129323959) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 959323921 - 2¹ = 959323919 is a prime.

Together with 959323919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (959323931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 479661960 + 479661961.

It is an arithmetic number, because the mean of its divisors is an integer number (479661961).

Almost surely, 2^959323921 is an apocalyptic number.

It is an amenable number.

959323921 is a deficient number, since it is larger than the sum of its proper divisors (1).

959323921 is an equidigital number, since it uses as much as digits as its factorization.

959323921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131220, while the sum is 43.

The square root of 959323921 is about 30972.9546701635. The cubic root of 959323921 is about 986.2531983770.

The spelling of 959323921 in words is "nine hundred fifty-nine million, three hundred twenty-three thousand, nine hundred twenty-one".