39949696363 has 4 divisors (see below), whose sum is σ = 42299678520. Its totient is φ = 37599714208.

The previous prime is 39949696327. The next prime is 39949696379. The reversal of 39949696363 is 36369694993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36369694993 = 1229 ⋅29592917.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39949696363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39949696313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1174991053 + ... + 1174991086.

It is an arithmetic number, because the mean of its divisors is an integer number (10574919630).

Almost surely, 2^39949696363 is an apocalyptic number.

39949696363 is a deficient number, since it is larger than the sum of its proper divisors (2349982157).

39949696363 is a wasteful number, since it uses less digits than its factorization.

39949696363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2349982156.

The product of its digits is 153055008, while the sum is 67.

The spelling of 39949696363 in words is "thirty-nine billion, nine hundred forty-nine million, six hundred ninety-six thousand, three hundred sixty-three".