4139540 has 24 divisors (see below), whose sum is σ = 9072000. Its totient is φ = 1583648.

The previous prime is 4139539. The next prime is 4139557. The reversal of 4139540 is 459314.

4139540 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4040 + ... + 4959.

It is an arithmetic number, because the mean of its divisors is an integer number (378000).

Almost surely, 2^4139540 is an apocalyptic number.

It is an amenable number.

4139540 is an abundant number, since it is smaller than the sum of its proper divisors (4932460).

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

4139540 is a wasteful number, since it uses less digits than its factorization.

4139540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9031 (or 9029 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 4139540 is about 2034.5859529644. The cubic root of 4139540 is about 160.5649300733.

The spelling of 4139540 in words is "four million, one hundred thirty-nine thousand, five hundred forty".