9906199049 has 2 divisors, whose sum is σ = 9906199050. Its totient is φ = 9906199048.

The previous prime is 9906199031. The next prime is 9906199067. The reversal of 9906199049 is 9409916099.

It is a balanced prime because it is at equal distance from previous prime (9906199031) and next prime (9906199067).

It can be written as a sum of positive squares in only one way, i.e., 7430440000 + 2475759049 = 86200^2 + 49757^2 .

It is an emirp because it is prime and its reverse (9409916099) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9906199049 - 2²⁴ = 9889421833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9906198985 and 9906199003.

It is not a weakly prime, because it can be changed into another prime (9906193049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4953099524 + 4953099525.

It is an arithmetic number, because the mean of its divisors is an integer number (4953099525).

Almost surely, 2^9906199049 is an apocalyptic number.

It is an amenable number.

9906199049 is a deficient number, since it is larger than the sum of its proper divisors (1).

9906199049 is an equidigital number, since it uses as much as digits as its factorization.

9906199049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1417176, while the sum is 56.

The square root of 9906199049 is about 99529.8902290161. The cubic root of 9906199049 is about 2147.6772498790.

The spelling of 9906199049 in words is "nine billion, nine hundred six million, one hundred ninety-nine thousand, forty-nine".