49139140 has 24 divisors (see below), whose sum is σ = 104735232. Its totient is φ = 19361760.

The previous prime is 49139131. The next prime is 49139159. The reversal of 49139140 is 4193194.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16996 + ... + 19675.

It is an arithmetic number, because the mean of its divisors is an integer number (4363968).

Almost surely, 2^49139140 is an apocalyptic number.

It is an amenable number.

49139140 is an abundant number, since it is smaller than the sum of its proper divisors (55596092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49139140 is a wasteful number, since it uses less digits than its factorization.

49139140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36747 (or 36745 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 49139140 is about 7009.9315260564. The cubic root of 49139140 is about 366.2766081613.

The spelling of 49139140 in words is "forty-nine million, one hundred thirty-nine thousand, one hundred forty".