9997173929 has 2 divisors, whose sum is σ = 9997173930. Its totient is φ = 9997173928.

The previous prime is 9997173899. The next prime is 9997173937. The reversal of 9997173929 is 9293717999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5433901225 + 4563272704 = 73715^2 + 67552^2 .

It is an emirp because it is prime and its reverse (9293717999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9997173929 - 2¹⁶ = 9997108393 is a prime.

It is not a weakly prime, because it can be changed into another prime (9997173829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4998586964 + 4998586965.

It is an arithmetic number, because the mean of its divisors is an integer number (4998586965).

Almost surely, 2^9997173929 is an apocalyptic number.

It is an amenable number.

9997173929 is a deficient number, since it is larger than the sum of its proper divisors (1).

9997173929 is an equidigital number, since it uses as much as digits as its factorization.

9997173929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17360406, while the sum is 65.

The square root of 9997173929 is about 99985.8686465242. The cubic root of 9997173929 is about 2154.2317180636.

The spelling of 9997173929 in words is "nine billion, nine hundred ninety-seven million, one hundred seventy-three thousand, nine hundred twenty-nine".