49697904849 has 4 divisors (see below), whose sum is σ = 66263873136. Its totient is φ = 33131936564.

The previous prime is 49697904827. The next prime is 49697904859. The reversal of 49697904849 is 94840979694.

49697904849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 49697904849 - 2¹¹ = 49697902801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49697904859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8282984139 + ... + 8282984144.

It is an arithmetic number, because the mean of its divisors is an integer number (16565968284).

Almost surely, 2^49697904849 is an apocalyptic number.

It is an amenable number.

49697904849 is a deficient number, since it is larger than the sum of its proper divisors (16565968287).

49697904849 is a wasteful number, since it uses less digits than its factorization.

49697904849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16565968286.

The product of its (nonzero) digits is 141087744, while the sum is 69.

The spelling of 49697904849 in words is "forty-nine billion, six hundred ninety-seven million, nine hundred four thousand, eight hundred forty-nine".