9961129 has 2 divisors, whose sum is σ = 9961130. Its totient is φ = 9961128.

The previous prime is 9961057. The next prime is 9961141. The reversal of 9961129 is 9211699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9363600 + 597529 = 3060^2 + 773^2 .

It is a cyclic number.

It is not a de Polignac number, because 9961129 - 2¹⁵ = 9928361 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9961429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4980564 + 4980565.

It is an arithmetic number, because the mean of its divisors is an integer number (4980565).

Almost surely, 2^9961129 is an apocalyptic number.

It is an amenable number.

9961129 is a deficient number, since it is larger than the sum of its proper divisors (1).

9961129 is an equidigital number, since it uses as much as digits as its factorization.

9961129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 37.

The square root of 9961129 is about 3156.1256312131. The cubic root of 9961129 is about 215.1639564225.

The spelling of 9961129 in words is "nine million, nine hundred sixty-one thousand, one hundred twenty-nine".