9980172973 has 8 divisors (see below), whose sum is σ = 10391194296. Its totient is φ = 9577132800.

The previous prime is 9980172971. The next prime is 9980172991. The reversal of 9980172973 is 3792710899.

It can be written as a sum of positive squares in 4 ways, for example, as 1795894884 + 8184278089 = 42378^2 + 90467^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 9980172973 - 2¹ = 9980172971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9980172971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1992736 + ... + 1997737.

It is an arithmetic number, because the mean of its divisors is an integer number (1298899287).

Almost surely, 2^9980172973 is an apocalyptic number.

It is an amenable number.

9980172973 is a deficient number, since it is larger than the sum of its proper divisors (411021323).

9980172973 is a wasteful number, since it uses less digits than its factorization.

9980172973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3990575.

The product of its (nonzero) digits is 1714608, while the sum is 55.

The square root of 9980172973 is about 99900.8156773507. The cubic root of 9980172973 is about 2153.0098801328.

The spelling of 9980172973 in words is "nine billion, nine hundred eighty million, one hundred seventy-two thousand, nine hundred seventy-three".