43909396868 has 6 divisors (see below), whose sum is σ = 76841444526. Its totient is φ = 21954698432.

The previous prime is 43909396841. The next prime is 43909396879. The reversal of 43909396868 is 86869390934.

It can be written as a sum of positive squares in only one way, i.e., 23750508544 + 20158888324 = 154112^2 + 141982^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5488674605 + ... + 5488674612.

It is an arithmetic number, because the mean of its divisors is an integer number (12806907421).

Almost surely, 2^43909396868 is an apocalyptic number.

It is an amenable number.

43909396868 is a deficient number, since it is larger than the sum of its proper divisors (32932047658).

43909396868 is a wasteful number, since it uses less digits than its factorization.

43909396868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10977349221 (or 10977349219 counting only the distinct ones).

The product of its (nonzero) digits is 60466176, while the sum is 65.

The spelling of 43909396868 in words is "forty-three billion, nine hundred nine million, three hundred ninety-six thousand, eight hundred sixty-eight".