43806497399 has 6 divisors (see below), whose sum is σ = 50958578664. Its totient is φ = 37548426300.

The previous prime is 43806497381. The next prime is 43806497431. The reversal of 43806497399 is 99379460834.

It is not a de Polignac number, because 43806497399 - 2³² = 39511530103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43806497309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 447005027 + ... + 447005124.

It is an arithmetic number, because the mean of its divisors is an integer number (8493096444).

Almost surely, 2^43806497399 is an apocalyptic number.

43806497399 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

43806497399 is a deficient number, since it is larger than the sum of its proper divisors (7152081265).

43806497399 is an equidigital number, since it uses as much as digits as its factorization.

43806497399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894010165 (or 894010158 counting only the distinct ones).

The product of its (nonzero) digits is 35271936, while the sum is 62.

The spelling of 43806497399 in words is "forty-three billion, eight hundred six million, four hundred ninety-seven thousand, three hundred ninety-nine".