49519989 has 24 divisors (see below), whose sum is σ = 77056512. Its totient is φ = 30555360.

The previous prime is 49519973. The next prime is 49520011. The reversal of 49519989 is 98991594.

49519989 is a `hidden beast` number, since 49 + 519 + 9 + 89 = 666.

It is not a de Polignac number, because 49519989 - 2⁴ = 49519973 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49519289) 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 23 ways as a sum of consecutive naturals, for example, 2559 + ... + 10275.

It is an arithmetic number, because the mean of its divisors is an integer number (3210688).

Almost surely, 2^49519989 is an apocalyptic number.

It is an amenable number.

49519989 is a deficient number, since it is larger than the sum of its proper divisors (27536523).

49519989 is a wasteful number, since it uses less digits than its factorization.

49519989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7777 (or 7774 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 54.

The square root of 49519989 is about 7037.0440527255. The cubic root of 49519989 is about 367.2204398963.

The spelling of 49519989 in words is "forty-nine million, five hundred nineteen thousand, nine hundred eighty-nine".