138983856 has 40 divisors (see below), whose sum is σ = 391683264. Its totient is φ = 42116160.

The previous prime is 138983837. The next prime is 138983893. The reversal of 138983856 is 658389831.

It is a junction number, because it is equal to n+sod(n) for n = 138983799 and 138983808.

It is an unprimeable number.

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, 131086 + ... + 132141.

Almost surely, 2^138983856 is an apocalyptic number.

138983856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

138983856 is an abundant number, since it is smaller than the sum of its proper divisors (252699408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138983856 is a wasteful number, since it uses less digits than its factorization.

138983856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263249 (or 263243 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 51.

The square root of 138983856 is about 11789.1414445667. The cubic root of 138983856 is about 517.9900913913.

The spelling of 138983856 in words is "one hundred thirty-eight million, nine hundred eighty-three thousand, eight hundred fifty-six".