9912392722 has 16 divisors (see below), whose sum is σ = 15281721432. Its totient is φ = 4818683520.

The previous prime is 9912392713. The next prime is 9912392729. The reversal of 9912392722 is 2272932199.

It is a Cunningham number, because it is equal to 99561²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 9797238361 + 115154361 = 98981^2 + 10731^2 .

It is not an unprimeable number, because it can be changed into a prime (9912392729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52822 + ... + 150382.

Almost surely, 2^9912392722 is an apocalyptic number.

9912392722 is a deficient number, since it is larger than the sum of its proper divisors (5369328710).

9912392722 is a wasteful number, since it uses less digits than its factorization.

9912392722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98973.

The product of its digits is 244944, while the sum is 46.

The square root of 9912392722 is about 99561.0000050220. Note that the first 5 decimals coincide. The cubic root of 9912392722 is about 2148.1247555002.

The spelling of 9912392722 in words is "nine billion, nine hundred twelve million, three hundred ninety-two thousand, seven hundred twenty-two".