139013636 has 6 divisors (see below), whose sum is σ = 243273870. Its totient is φ = 69506816.

The previous prime is 139013621. The next prime is 139013653. The reversal of 139013636 is 636310931.

139013636 is digitally balanced in base 3, 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., 82011136 + 57002500 = 9056^2 + 7550^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17376701 + ... + 17376708.

It is an arithmetic number, because the mean of its divisors is an integer number (40545645).

Almost surely, 2^139013636 is an apocalyptic number.

It is an amenable number.

139013636 is a deficient number, since it is larger than the sum of its proper divisors (104260234).

139013636 is a wasteful number, since it uses less digits than its factorization.

139013636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34753413 (or 34753411 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 139013636 is about 11790.4044035818. The cubic root of 139013636 is about 518.0270852402.

The spelling of 139013636 in words is "one hundred thirty-nine million, thirteen thousand, six hundred thirty-six".