9803772197 has 8 divisors (see below), whose sum is σ = 10037231832. Its totient is φ = 9572659200.

The previous prime is 9803772191. The next prime is 9803772203. The reversal of 9803772197 is 7912773089.

It is a Cunningham number, because it is equal to 99014²+1.

It is an interprime number because it is at equal distance from previous prime (9803772191) and next prime (9803772203).

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 9803772196 = 1^2 + 99014^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9803772197 is a prime.

It is a super-2 number, since 2×9803772197² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9803772191) 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, 578204 + ... + 594917.

It is an arithmetic number, because the mean of its divisors is an integer number (1254653979).

Almost surely, 2^9803772197 is an apocalyptic number.

It is an amenable number.

9803772197 is a deficient number, since it is larger than the sum of its proper divisors (233459635).

9803772197 is a wasteful number, since it uses less digits than its factorization.

9803772197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173319.

The product of its (nonzero) digits is 1333584, while the sum is 53.

The square root of 9803772197 is about 99014.0000050498. Note that the first 5 decimals coincide. The cubic root of 9803772197 is about 2140.2494975795.

The spelling of 9803772197 in words is "nine billion, eight hundred three million, seven hundred seventy-two thousand, one hundred ninety-seven".