49999998 has 16 divisors (see below), whose sum is σ = 100080000.
Its totient is φ = 16653336.
The previous prime is 49999991. The next prime is 50000017. The reversal of 49999998 is 89999994.
It is a happy number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (49999991) 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, 7503 + ... + 12501.
It is an arithmetic number, because the mean of its divisors is an integer number (6255000).
Almost surely, 249999998 is an apocalyptic number.
49999998 is an abundant number, since it is smaller than the sum of its proper divisors (50080002).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
49999998 is a wasteful number, since it uses less digits than its factorization.
49999998 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6671.
The product of its digits is 17006112, while the sum is 66.
The square root of 49999998 is about 7071.0676704441.
The cubic root of 49999998 is about 368.4031449520.
The spelling of 49999998 in words is "forty-nine million, nine hundred ninety-nine thousand, nine hundred ninety-eight".