13936784949 has 12 divisors (see below), whose sum is σ = 20164084096. Its totient is φ = 9275879592.

The previous prime is 13936784929. The next prime is 13936784963. The reversal of 13936784949 is 94948763931.

13936784949 is a `hidden beast` number, since 139 + 3 + 6 + 7 + 8 + 494 + 9 = 666.

It is not a de Polignac number, because 13936784949 - 2⁹ = 13936784437 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 (13936784929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1270099 + ... + 1281024.

Almost surely, 2^13936784949 is an apocalyptic number.

It is an amenable number.

13936784949 is a deficient number, since it is larger than the sum of its proper divisors (6227299147).

13936784949 is a wasteful number, since it uses less digits than its factorization.

13936784949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2551736 (or 2551733 counting only the distinct ones).

The product of its digits is 35271936, while the sum is 63.

The spelling of 13936784949 in words is "thirteen billion, nine hundred thirty-six million, seven hundred eighty-four thousand, nine hundred forty-nine".