43386319989 has 6 divisors (see below), whose sum is σ = 62669128886. Its totient is φ = 28924213320.

The previous prime is 43386319943. The next prime is 43386320011. The reversal of 43386319989 is 98991368334.

43386319989 is a `hidden beast` number, since 433 + 8 + 6 + 3 + 199 + 8 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 27214111089 + 16172208900 = 164967^2 + 127170^2 .

It is not a de Polignac number, because 43386319989 - 2⁸ = 43386319733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43386319909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2410351102 + ... + 2410351119.

Almost surely, 2^43386319989 is an apocalyptic number.

It is an amenable number.

43386319989 is a deficient number, since it is larger than the sum of its proper divisors (19282808897).

43386319989 is a wasteful number, since it uses less digits than its factorization.

43386319989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4820702227 (or 4820702224 counting only the distinct ones).

The product of its digits is 30233088, while the sum is 63.

The spelling of 43386319989 in words is "forty-three billion, three hundred eighty-six million, three hundred nineteen thousand, nine hundred eighty-nine".