959857121 has 2 divisors, whose sum is σ = 959857122. Its totient is φ = 959857120.

The previous prime is 959857097. The next prime is 959857127. The reversal of 959857121 is 121758959.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 959760400 + 96721 = 30980^2 + 311^2 .

It is a cyclic number.

It is not a de Polignac number, because 959857121 - 2¹⁰ = 959856097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (959857127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 479928560 + 479928561.

It is an arithmetic number, because the mean of its divisors is an integer number (479928561).

Almost surely, 2^959857121 is an apocalyptic number.

It is an amenable number.

959857121 is a deficient number, since it is larger than the sum of its proper divisors (1).

959857121 is an equidigital number, since it uses as much as digits as its factorization.

959857121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 47.

The square root of 959857121 is about 30981.5609839143. The cubic root of 959857121 is about 986.4358870381.

The spelling of 959857121 in words is "nine hundred fifty-nine million, eight hundred fifty-seven thousand, one hundred twenty-one".