9997049173 has 2 divisors, whose sum is σ = 9997049174. Its totient is φ = 9997049172.

The previous prime is 9997049141. The next prime is 9997049197. The reversal of 9997049173 is 3719407999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8894941969 + 1102107204 = 94313^2 + 33198^2 .

It is an emirp because it is prime and its reverse (3719407999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9997049173 - 2⁵ = 9997049141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9997049113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4998524586 + 4998524587.

It is an arithmetic number, because the mean of its divisors is an integer number (4998524587).

Almost surely, 2^9997049173 is an apocalyptic number.

It is an amenable number.

9997049173 is a deficient number, since it is larger than the sum of its proper divisors (1).

9997049173 is an equidigital number, since it uses as much as digits as its factorization.

9997049173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3857868, while the sum is 58.

The square root of 9997049173 is about 99985.2447764169. The cubic root of 9997049173 is about 2154.2227570495. Note that the first 3 decimals are identical.

The spelling of 9997049173 in words is "nine billion, nine hundred ninety-seven million, forty-nine thousand, one hundred seventy-three".