959761921 has 2 divisors, whose sum is σ = 959761922. Its totient is φ = 959761920.

The previous prime is 959761919. The next prime is 959761939. The reversal of 959761921 is 129167959.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 959760400 + 1521 = 30980^2 + 39^2 .

It is a cyclic number.

It is not a de Polignac number, because 959761921 - 2¹ = 959761919 is a prime.

It is a super-2 number, since 2×959761921² = 1842285890003220482, which contains 22 as substring.

Together with 959761919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (959761021) 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, 479880960 + 479880961.

It is an arithmetic number, because the mean of its divisors is an integer number (479880961).

Almost surely, 2^959761921 is an apocalyptic number.

It is an amenable number.

959761921 is a deficient number, since it is larger than the sum of its proper divisors (1).

959761921 is an equidigital number, since it uses as much as digits as its factorization.

959761921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 306180, while the sum is 49.

The square root of 959761921 is about 30980.0245480858. The cubic root of 959761921 is about 986.4032739198.

The spelling of 959761921 in words is "nine hundred fifty-nine million, seven hundred sixty-one thousand, nine hundred twenty-one".