9958961 has 2 divisors, whose sum is σ = 9958962. Its totient is φ = 9958960.

The previous prime is 9958939. The next prime is 9958969. The reversal of 9958961 is 1698599.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8737936 + 1221025 = 2956^2 + 1105^2 .

It is a cyclic number.

It is not a de Polignac number, because 9958961 - 2¹⁴ = 9942577 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9958969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4979480 + 4979481.

It is an arithmetic number, because the mean of its divisors is an integer number (4979481).

Almost surely, 2^9958961 is an apocalyptic number.

It is an amenable number.

9958961 is a deficient number, since it is larger than the sum of its proper divisors (1).

9958961 is an equidigital number, since it uses as much as digits as its factorization.

9958961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 47.

The square root of 9958961 is about 3155.7821534447. The cubic root of 9958961 is about 215.1483454309.

The spelling of 9958961 in words is "nine million, nine hundred fifty-eight thousand, nine hundred sixty-one".