9911980229 has 2 divisors, whose sum is σ = 9911980230. Its totient is φ = 9911980228.

The previous prime is 9911980213. The next prime is 9911980261. The reversal of 9911980229 is 9220891199.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7859709025 + 2052271204 = 88655^2 + 45302^2 .

It is a cyclic number.

It is not a de Polignac number, because 9911980229 - 2⁴ = 9911980213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9911980279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4955990114 + 4955990115.

It is an arithmetic number, because the mean of its divisors is an integer number (4955990115).

Almost surely, 2^9911980229 is an apocalyptic number.

It is an amenable number.

9911980229 is a deficient number, since it is larger than the sum of its proper divisors (1).

9911980229 is an equidigital number, since it uses as much as digits as its factorization.

9911980229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 50.

The square root of 9911980229 is about 99558.9284243257. The cubic root of 9911980229 is about 2148.0949578270.

The spelling of 9911980229 in words is "nine billion, nine hundred eleven million, nine hundred eighty thousand, two hundred twenty-nine".