39813899349 has 32 divisors (see below), whose sum is σ = 62959115520. Its totient is φ = 21896888832.

The previous prime is 39813899303. The next prime is 39813899351. The reversal of 39813899349 is 94399831893.

It is a happy number.

It is not a de Polignac number, because 39813899349 - 2⁷ = 39813899221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39813899349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39813899249) 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 31 ways as a sum of consecutive naturals, for example, 89937 + ... + 296169.

It is an arithmetic number, because the mean of its divisors is an integer number (1967472360).

Almost surely, 2^39813899349 is an apocalyptic number.

It is an amenable number.

39813899349 is a deficient number, since it is larger than the sum of its proper divisors (23145216171).

39813899349 is a wasteful number, since it uses less digits than its factorization.

39813899349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206589.

The product of its digits is 45349632, while the sum is 66.

The spelling of 39813899349 in words is "thirty-nine billion, eight hundred thirteen million, eight hundred ninety-nine thousand, three hundred forty-nine".