49040139 has 4 divisors (see below), whose sum is σ = 65386856. Its totient is φ = 32693424.

The previous prime is 49040077. The next prime is 49040177. The reversal of 49040139 is 93104094.

49040139 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 not a de Polignac number, because 49040139 - 2¹³ = 49031947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49040239) 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, 8173354 + ... + 8173359.

It is an arithmetic number, because the mean of its divisors is an integer number (16346714).

Almost surely, 2^49040139 is an apocalyptic number.

49040139 is a deficient number, since it is larger than the sum of its proper divisors (16346717).

49040139 is a wasteful number, since it uses less digits than its factorization.

49040139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16346716.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 49040139 is about 7002.8664845190. The cubic root of 49040139 is about 366.0304626919.

The spelling of 49040139 in words is "forty-nine million, forty thousand, one hundred thirty-nine".