49999983 has 24 divisors (see below), whose sum is σ = 73779888.
Its totient is φ = 30096000.
The previous prime is 49999921. The next prime is 49999991. The reversal of 49999983 is 38999994.
It is not a de Polignac number, because 49999983 - 29 = 49999471 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (49999903) 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, 65323 + ... + 66083.
It is an arithmetic number, because the mean of its divisors is an integer number (3074162).
Almost surely, 249999983 is an apocalyptic number.
49999983 is a deficient number, since it is larger than the sum of its proper divisors (23779905).
49999983 is a wasteful number, since it uses less digits than its factorization.
49999983 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 967 (or 956 counting only the distinct ones).
The product of its digits is 5668704, while the sum is 60.
The square root of 49999983 is about 7071.0666097838.
The cubic root of 49999983 is about 368.4031081117.
The spelling of 49999983 in words is "forty-nine million, nine hundred ninety-nine thousand, nine hundred eighty-three".