49639543 has 8 divisors (see below), whose sum is σ = 52648416. Its totient is φ = 46701600.

The previous prime is 49639529. The next prime is 49639549. The reversal of 49639543 is 34593694.

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

It is a de Polignac number, because none of the positive numbers 2^k-49639543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49639543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49639549) 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, 16288 + ... + 19093.

It is an arithmetic number, because the mean of its divisors is an integer number (6581052).

Almost surely, 2^49639543 is an apocalyptic number.

49639543 is a deficient number, since it is larger than the sum of its proper divisors (3008873).

49639543 is a wasteful number, since it uses less digits than its factorization.

49639543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35465.

The product of its digits is 349920, while the sum is 43.

The square root of 49639543 is about 7045.5335497037. The cubic root of 49639543 is about 367.5157239481.

The spelling of 49639543 in words is "forty-nine million, six hundred thirty-nine thousand, five hundred forty-three".