49707139 has 2 divisors, whose sum is σ = 49707140. Its totient is φ = 49707138.

The previous prime is 49707137. The next prime is 49707143. The reversal of 49707139 is 93170794.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49707139 - 2¹ = 49707137 is a prime.

Together with 49707137, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (49707137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24853569 + 24853570.

It is an arithmetic number, because the mean of its divisors is an integer number (24853570).

Almost surely, 2^49707139 is an apocalyptic number.

49707139 is a deficient number, since it is larger than the sum of its proper divisors (1).

49707139 is an equidigital number, since it uses as much as digits as its factorization.

49707139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 49707139 is about 7050.3289994156. The cubic root of 49707139 is about 367.6824681977.

The spelling of 49707139 in words is "forty-nine million, seven hundred seven thousand, one hundred thirty-nine".