9906199061 has 32 divisors (see below), whose sum is σ = 11626122240. Its totient is φ = 8351164800.

The previous prime is 9906199049. The next prime is 9906199067. The reversal of 9906199061 is 1609916099.

It is not a de Polignac number, because 9906199061 - 2²⁶ = 9839090197 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9906199067) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1085126 + ... + 1094216.

It is an arithmetic number, because the mean of its divisors is an integer number (363316320).

Almost surely, 2^9906199061 is an apocalyptic number.

It is an amenable number.

9906199061 is a deficient number, since it is larger than the sum of its proper divisors (1719923179).

9906199061 is a wasteful number, since it uses less digits than its factorization.

9906199061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9257.

The product of its (nonzero) digits is 236196, while the sum is 50.

The square root of 9906199061 is about 99529.8902892995. The cubic root of 9906199061 is about 2147.6772507462.

The spelling of 9906199061 in words is "nine billion, nine hundred six million, one hundred ninety-nine thousand, sixty-one".