139000838 has 8 divisors (see below), whose sum is σ = 215227200. Its totient is φ = 67258440.

The previous prime is 139000837. The next prime is 139000843. The reversal of 139000838 is 838000931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139000831) 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 3 ways as a sum of consecutive naturals, for example, 1120913 + ... + 1121036.

It is an arithmetic number, because the mean of its divisors is an integer number (26903400).

Almost surely, 2^139000838 is an apocalyptic number.

139000838 is a deficient number, since it is larger than the sum of its proper divisors (76226362).

139000838 is a wasteful number, since it uses less digits than its factorization.

139000838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2241982.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 139000838 is about 11789.8616616142. The cubic root of 139000838 is about 518.0111877252.

The spelling of 139000838 in words is "one hundred thirty-nine million, eight hundred thirty-eight", and thus it is an aban number.