972189 has 8 divisors (see below), whose sum is σ = 1440320. Its totient is φ = 648108.

The previous prime is 972163. The next prime is 972197. The reversal of 972189 is 981279.

It is a happy number.

It is not a de Polignac number, because 972189 - 2⁸ = 971933 is a prime.

It is a Duffinian number.

It is a Curzon number.

972189 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (972119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17977 + ... + 18030.

It is an arithmetic number, because the mean of its divisors is an integer number (180040).

2⁹⁷²¹⁸⁹ is an apocalyptic number.

It is an amenable number.

972189 is a deficient number, since it is larger than the sum of its proper divisors (468131).

972189 is a wasteful number, since it uses less digits than its factorization.

972189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36016 (or 36010 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 972189 is about 985.9964502979. The cubic root of 972189 is about 99.0642374648.

The spelling of 972189 in words is "nine hundred seventy-two thousand, one hundred eighty-nine".