9942902197 has 2 divisors, whose sum is σ = 9942902198. Its totient is φ = 9942902196.

The previous prime is 9942902173. The next prime is 9942902209. The reversal of 9942902197 is 7912092499.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6589218276 + 3353683921 = 81174^2 + 57911^2 .

It is a cyclic number.

It is not a de Polignac number, because 9942902197 - 2¹⁵ = 9942869429 is a prime.

It is a super-2 number, since 2×9942902197² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9942902117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4971451098 + 4971451099.

It is an arithmetic number, because the mean of its divisors is an integer number (4971451099).

Almost surely, 2^9942902197 is an apocalyptic number.

It is an amenable number.

9942902197 is a deficient number, since it is larger than the sum of its proper divisors (1).

9942902197 is an equidigital number, since it uses as much as digits as its factorization.

9942902197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 9942902197 is about 99714.1022975186. The cubic root of 9942902197 is about 2150.3264113758.

The spelling of 9942902197 in words is "nine billion, nine hundred forty-two million, nine hundred two thousand, one hundred ninety-seven".