4139656 has 8 divisors (see below), whose sum is σ = 7761870. Its totient is φ = 2069824.

The previous prime is 4139627. The next prime is 4139659. The reversal of 4139656 is 6569314.

4139656 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., 4137156 + 2500 = 2034^2 + 50^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (4139659) by changing a digit.

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 as a sum of consecutive naturals, namely, 258721 + ... + 258736.

Almost surely, 2^4139656 is an apocalyptic number.

It is an amenable number.

4139656 is a deficient number, since it is larger than the sum of its proper divisors (3622214).

4139656 is a wasteful number, since it uses less digits than its factorization.

4139656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517463 (or 517459 counting only the distinct ones).

The product of its digits is 19440, while the sum is 34.

The square root of 4139656 is about 2034.6144597933. The cubic root of 4139656 is about 160.5664298662.

The spelling of 4139656 in words is "four million, one hundred thirty-nine thousand, six hundred fifty-six".