139109204 has 24 divisors (see below), whose sum is σ = 265493760. Its totient is φ = 63389664.

The previous prime is 139109167. The next prime is 139109207. The reversal of 139109204 is 402901931.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139109207) 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 in 7 ways as a sum of consecutive naturals, for example, 12824 + ... + 21039.

It is an arithmetic number, because the mean of its divisors is an integer number (11062240).

Almost surely, 2^139109204 is an apocalyptic number.

It is an amenable number.

139109204 is a deficient number, since it is larger than the sum of its proper divisors (126384556).

139109204 is a wasteful number, since it uses less digits than its factorization.

139109204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33959 (or 33957 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 139109204 is about 11794.4564944723. The cubic root of 139109204 is about 518.1457677747.

The spelling of 139109204 in words is "one hundred thirty-nine million, one hundred nine thousand, two hundred four".