49539789 has 32 divisors (see below), whose sum is σ = 80559360. Its totient is φ = 29899584.

The previous prime is 49539773. The next prime is 49539797. The reversal of 49539789 is 98793594.

It is not a de Polignac number, because 49539789 - 2⁴ = 49539773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49539709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17272 + ... + 19934.

It is an arithmetic number, because the mean of its divisors is an integer number (2517480).

Almost surely, 2^49539789 is an apocalyptic number.

It is an amenable number.

49539789 is a deficient number, since it is larger than the sum of its proper divisors (31019571).

49539789 is a wasteful number, since it uses less digits than its factorization.

49539789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2738 (or 2732 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The square root of 49539789 is about 7038.4507528291. The cubic root of 49539789 is about 367.2693763359.

The spelling of 49539789 in words is "forty-nine million, five hundred thirty-nine thousand, seven hundred eighty-nine".