971923745 has 32 divisors (see below), whose sum is σ = 1332767520. Its totient is φ = 674058240.

The previous prime is 971923717. The next prime is 971923747. The reversal of 971923745 is 547329179.

971923745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 16 ways, for example, as 142253329 + 829670416 = 11927^2 + 28804^2 .

It is not a de Polignac number, because 971923745 - 2²⁴ = 955146529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 971923745.

It is not an unprimeable number, because it can be changed into a prime (971923747) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 915515 + ... + 916575.

It is an arithmetic number, because the mean of its divisors is an integer number (41648985).

Almost surely, 2^971923745 is an apocalyptic number.

It is an amenable number.

971923745 is a deficient number, since it is larger than the sum of its proper divisors (360843775).

971923745 is a wasteful number, since it uses less digits than its factorization.

971923745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1925.

The product of its digits is 476280, while the sum is 47.

The square root of 971923745 is about 31175.6915721207. The cubic root of 971923745 is about 990.5522698282.

The spelling of 971923745 in words is "nine hundred seventy-one million, nine hundred twenty-three thousand, seven hundred forty-five".