975272189 has 4 divisors (see below), whose sum is σ = 988632156. Its totient is φ = 961912224.

The previous prime is 975272141. The next prime is 975272203. The reversal of 975272189 is 981272579.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 172003225 + 803268964 = 13115^2 + 28342^2 .

It is a cyclic number.

It is not a de Polignac number, because 975272189 - 2²⁸ = 706836733 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 (975272119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6679874 + ... + 6680019.

It is an arithmetic number, because the mean of its divisors is an integer number (247158039).

Almost surely, 2^975272189 is an apocalyptic number.

It is an amenable number.

975272189 is a deficient number, since it is larger than the sum of its proper divisors (13359967).

975272189 is a wasteful number, since it uses less digits than its factorization.

975272189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13359966.

The product of its digits is 635040, while the sum is 50.

The square root of 975272189 is about 31229.3482000505. The cubic root of 975272189 is about 991.6885068027.

The spelling of 975272189 in words is "nine hundred seventy-five million, two hundred seventy-two thousand, one hundred eighty-nine".