139866044 has 6 divisors (see below), whose sum is σ = 244765584. Its totient is φ = 69933020.

The previous prime is 139865983. The next prime is 139866061. The reversal of 139866044 is 440668931.

139866044 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 139865992 and 139866010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17483252 + ... + 17483259.

It is an arithmetic number, because the mean of its divisors is an integer number (40794264).

Almost surely, 2^139866044 is an apocalyptic number.

It is an amenable number.

139866044 is a deficient number, since it is larger than the sum of its proper divisors (104899540).

139866044 is a wasteful number, since it uses less digits than its factorization.

139866044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34966515 (or 34966513 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 139866044 is about 11826.4975373100. The cubic root of 139866044 is about 519.0837464461.

The spelling of 139866044 in words is "one hundred thirty-nine million, eight hundred sixty-six thousand, forty-four".