43972979266 has 8 divisors (see below), whose sum is σ = 66155195340. Its totient is φ = 21921247488.

The previous prime is 43972979227. The next prime is 43972979311. The reversal of 43972979266 is 66297927934.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 36699448041 + 7273531225 = 191571^2 + 85285^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 43972979198 and 43972979207.

It is an unprimeable number.

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, 32620231 + ... + 32621578.

Almost surely, 2^43972979266 is an apocalyptic number.

43972979266 is a deficient number, since it is larger than the sum of its proper divisors (22182216074).

43972979266 is a wasteful number, since it uses less digits than its factorization.

43972979266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65242148.

The product of its digits is 61725888, while the sum is 64.

The spelling of 43972979266 in words is "forty-three billion, nine hundred seventy-two million, nine hundred seventy-nine thousand, two hundred sixty-six".