972889763 has 4 divisors (see below), whose sum is σ = 989379480. Its totient is φ = 956400048.

The previous prime is 972889751. The next prime is 972889769. The reversal of 972889763 is 367988279.

972889763 is nontrivially palindromic in base 13.

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

It is a cyclic number.

It is not a de Polignac number, because 972889763 - 2²⁰ = 971841187 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (59), and also a Moran number because the ratio is a prime number: 16489657 = 972889763 / (9 + 7 + 2 + 8 + 8 + 9 + 7 + 6 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (972889769) 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 3 ways as a sum of consecutive naturals, for example, 8244770 + ... + 8244887.

It is an arithmetic number, because the mean of its divisors is an integer number (247344870).

Almost surely, 2^972889763 is an apocalyptic number.

972889763 is a deficient number, since it is larger than the sum of its proper divisors (16489717).

972889763 is a wasteful number, since it uses less digits than its factorization.

972889763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16489716.

The product of its digits is 9144576, while the sum is 59.

The square root of 972889763 is about 31191.1808529270. The cubic root of 972889763 is about 990.8803389374.

The spelling of 972889763 in words is "nine hundred seventy-two million, eight hundred eighty-nine thousand, seven hundred sixty-three".