49998489993 has 12 divisors (see below), whose sum is σ = 75360043200. Its totient is φ = 31883094936.

The previous prime is 49998489991. The next prime is 49998490007. The reversal of 49998489993 is 39998489994.

It is a happy number.

49998489993 is a `hidden beast` number, since 49 + 9 + 9 + 8 + 489 + 9 + 93 = 666.

It is not a de Polignac number, because 49998489993 - 2¹ = 49998489991 is a prime.

It is a super-2 number, since 2×49998489993² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49998489991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120769093 + ... + 120769506.

It is an arithmetic number, because the mean of its divisors is an integer number (6280003600).

Almost surely, 2^49998489993 is an apocalyptic number.

It is an amenable number.

49998489993 is a deficient number, since it is larger than the sum of its proper divisors (25361553207).

49998489993 is a wasteful number, since it uses less digits than its factorization.

49998489993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241538628 (or 241538625 counting only the distinct ones).

The product of its digits is 1632586752, while the sum is 81.

Subtracting from 49998489993 its reverse (39998489994), we obtain a palindrome (9999999999).

The spelling of 49998489993 in words is "forty-nine billion, nine hundred ninety-eight million, four hundred eighty-nine thousand, nine hundred ninety-three".