49139908 has 6 divisors (see below), whose sum is σ = 85994846. Its totient is φ = 24569952.

The previous prime is 49139903. The next prime is 49139939. The reversal of 49139908 is 80993194.

49139908 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 47582404 + 1557504 = 6898^2 + 1248^2 .

It is not an unprimeable number, because it can be changed into a prime (49139903) 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 as a sum of consecutive naturals, namely, 6142485 + ... + 6142492.

Almost surely, 2^49139908 is an apocalyptic number.

It is an amenable number.

49139908 is a deficient number, since it is larger than the sum of its proper divisors (36854938).

49139908 is a wasteful number, since it uses less digits than its factorization.

49139908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12284981 (or 12284979 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 49139908 is about 7009.9863052648. The cubic root of 49139908 is about 366.2785163413.

The spelling of 49139908 in words is "forty-nine million, one hundred thirty-nine thousand, nine hundred eight".