49039639 has 8 divisors (see below), whose sum is σ = 54018432. Its totient is φ = 44147640.

The previous prime is 49039633. The next prime is 49039643. The reversal of 49039639 is 93693094.

It is a happy number.

49039639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 49039639 - 2⁹ = 49039127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49039595 and 49039604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49039633) 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 7 ways as a sum of consecutive naturals, for example, 20509 + ... + 22774.

It is an arithmetic number, because the mean of its divisors is an integer number (6752304).

Almost surely, 2^49039639 is an apocalyptic number.

49039639 is a deficient number, since it is larger than the sum of its proper divisors (4978793).

49039639 is a wasteful number, since it uses less digits than its factorization.

49039639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43397.

The product of its (nonzero) digits is 157464, while the sum is 43.

The square root of 49039639 is about 7002.8307847613. The cubic root of 49039639 is about 366.0292187051.

The spelling of 49039639 in words is "forty-nine million, thirty-nine thousand, six hundred thirty-nine".