49998681 has 8 divisors (see below), whose sum is σ = 74072160.
Its totient is φ = 33332436.
The previous prime is 49998661. The next prime is 49998727. The reversal of 49998681 is 18689994.
49998681 is a `hidden beast` number, since 499 + 98 + 68 + 1 = 666.
It is not a de Polignac number, because 49998681 - 26 = 49998617 is a prime.
It is a super-2 number, since 2×499986812 = 4999736203479522, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (49998601) 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 7 ways as a sum of consecutive naturals, for example, 925875 + ... + 925928.
It is an arithmetic number, because the mean of its divisors is an integer number (9259020).
Almost surely, 249998681 is an apocalyptic number.
It is an amenable number.
49998681 is a deficient number, since it is larger than the sum of its proper divisors (24073479).
49998681 is a wasteful number, since it uses less digits than its factorization.
49998681 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1851812 (or 1851806 counting only the distinct ones).
The product of its digits is 1119744, while the sum is 54.
The square root of 49998681 is about 7070.9745438659.
The cubic root of 49998681 is about 368.3999103439.
The spelling of 49998681 in words is "forty-nine million, nine hundred ninety-eight thousand, six hundred eighty-one".