49306139 has 4 divisors (see below), whose sum is σ = 49433280. Its totient is φ = 49179000.

The previous prime is 49306129. The next prime is 49306141. The reversal of 49306139 is 93160394.

49306139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 49306139 - 2²⁰ = 48257563 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49306099 and 49306108.

It is not an unprimeable number, because it can be changed into a prime (49306109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62987 + ... + 63764.

It is an arithmetic number, because the mean of its divisors is an integer number (12358320).

Almost surely, 2^49306139 is an apocalyptic number.

49306139 is a deficient number, since it is larger than the sum of its proper divisors (127141).

49306139 is a wasteful number, since it uses less digits than its factorization.

49306139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127140.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 49306139 is about 7021.8330227940. The cubic root of 49306139 is about 366.6910684403.

The spelling of 49306139 in words is "forty-nine million, three hundred six thousand, one hundred thirty-nine".