972789 has 8 divisors (see below), whose sum is σ = 1327392. Its totient is φ = 633360.

The previous prime is 972787. The next prime is 972793. The reversal of 972789 is 987279.

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

It is not a de Polignac number, because 972789 - 2¹ = 972787 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 972789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (972787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3642 + ... + 3899.

It is an arithmetic number, because the mean of its divisors is an integer number (165924).

2⁹⁷²⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

972789 is a deficient number, since it is larger than the sum of its proper divisors (354603).

972789 is a wasteful number, since it uses less digits than its factorization.

972789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7587.

The product of its digits is 63504, while the sum is 42.

The square root of 972789 is about 986.3006640979. The cubic root of 972789 is about 99.0846128990.

The spelling of 972789 in words is "nine hundred seventy-two thousand, seven hundred eighty-nine".