49639889906439 has 8 divisors (see below), whose sum is σ = 75641737000320. Its totient is φ = 28365651375096.

The previous prime is 49639889906423. The next prime is 49639889906459. The reversal of 49639889906439 is 93460998893694.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 49639889906439 - 2⁴ = 49639889906423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49639889906459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1181902140609 + ... + 1181902140650.

It is an arithmetic number, because the mean of its divisors is an integer number (9455217125040).

Almost surely, 2^{49639889906439} is an apocalyptic number.

49639889906439 is a deficient number, since it is larger than the sum of its proper divisors (26001847093881).

49639889906439 is a wasteful number, since it uses less digits than its factorization.

49639889906439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2363804281269.

The product of its (nonzero) digits is 19591041024, while the sum is 87.

The spelling of 49639889906439 in words is "forty-nine trillion, six hundred thirty-nine billion, eight hundred eighty-nine million, nine hundred six thousand, four hundred thirty-nine".