49493839 has 4 divisors (see below), whose sum is σ = 49509720.
Its totient is φ = 49477960.
The previous prime is 49493837. The next prime is 49493863. The reversal of 49493839 is 93839494.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 49493839 - 21 = 49493837 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 49493792 and 49493801.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (49493833) 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 3 ways as a sum of consecutive naturals, for example, 1552 + ... + 10069.
It is an arithmetic number, because the mean of its divisors is an integer number (12377430).
Almost surely, 249493839 is an apocalyptic number.
49493839 is a deficient number, since it is larger than the sum of its proper divisors (15881).
49493839 is a wasteful number, since it uses less digits than its factorization.
49493839 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 15880.
The product of its digits is 839808, while the sum is 49.
The square root of 49493839 is about 7035.1857829058.
The cubic root of 49493839 is about 367.1557891999.
The spelling of 49493839 in words is "forty-nine million, four hundred ninety-three thousand, eight hundred thirty-nine".