39933097889 has 4 divisors (see below), whose sum is σ = 40587738900. Its totient is φ = 39278456880.

The previous prime is 39933097859. The next prime is 39933097891. The reversal of 39933097889 is 98879033993.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12908368225 + 27024729664 = 113615^2 + 164392^2 .

It is a cyclic number.

It is not a de Polignac number, because 39933097889 - 2¹² = 39933093793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39933097849) 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 3 ways as a sum of consecutive naturals, for example, 327320414 + ... + 327320535.

It is an arithmetic number, because the mean of its divisors is an integer number (10146934725).

Almost surely, 2^39933097889 is an apocalyptic number.

It is an amenable number.

39933097889 is a deficient number, since it is larger than the sum of its proper divisors (654641011).

39933097889 is an equidigital number, since it uses as much as digits as its factorization.

39933097889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654641010.

The product of its (nonzero) digits is 79361856, while the sum is 68.

The spelling of 39933097889 in words is "thirty-nine billion, nine hundred thirty-three million, ninety-seven thousand, eight hundred eighty-nine".