43987794376 has 8 divisors (see below), whose sum is σ = 82477114470. Its totient is φ = 21993897184.

The previous prime is 43987794371. The next prime is 43987794391. The reversal of 43987794376 is 67349778934.

43987794376 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 only one way, i.e., 43268160100 + 719634276 = 208010^2 + 26826^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (43987794371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2749237141 + ... + 2749237156.

Almost surely, 2^43987794376 is an apocalyptic number.

It is an amenable number.

43987794376 is a deficient number, since it is larger than the sum of its proper divisors (38489320094).

43987794376 is a wasteful number, since it uses less digits than its factorization.

43987794376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5498474303 (or 5498474299 counting only the distinct ones).

The product of its digits is 192036096, while the sum is 67.

The spelling of 43987794376 in words is "forty-three billion, nine hundred eighty-seven million, seven hundred ninety-four thousand, three hundred seventy-six".