49387747 has 4 divisors (see below), whose sum is σ = 49494880. Its totient is φ = 49280616.

The previous prime is 49387729. The next prime is 49387753. The reversal of 49387747 is 74778394.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74778394 = 2 ⋅37389197.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49387747 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 49387747.

It is not an unprimeable number, because it can be changed into a prime (49387757) 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, 52872 + ... + 53797.

It is an arithmetic number, because the mean of its divisors is an integer number (12373720).

Almost surely, 2^49387747 is an apocalyptic number.

49387747 is a deficient number, since it is larger than the sum of its proper divisors (107133).

49387747 is a wasteful number, since it uses less digits than its factorization.

49387747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107132.

The product of its digits is 1185408, while the sum is 49.

The square root of 49387747 is about 7027.6416385584. The cubic root of 49387747 is about 366.8932638844.

The spelling of 49387747 in words is "forty-nine million, three hundred eighty-seven thousand, seven hundred forty-seven".