138847412 has 24 divisors (see below), whose sum is σ = 276599232. Its totient is φ = 60368000.

The previous prime is 138847391. The next prime is 138847417. The reversal of 138847412 is 214748831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138847417) 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, 67589 + ... + 69612.

It is an arithmetic number, because the mean of its divisors is an integer number (11524968).

Almost surely, 2^138847412 is an apocalyptic number.

It is an amenable number.

138847412 is a deficient number, since it is larger than the sum of its proper divisors (137751820).

138847412 is a wasteful number, since it uses less digits than its factorization.

138847412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137239 (or 137237 counting only the distinct ones).

The product of its digits is 43008, while the sum is 38.

The square root of 138847412 is about 11783.3531730149. The cubic root of 138847412 is about 517.8205278582.

The spelling of 138847412 in words is "one hundred thirty-eight million, eight hundred forty-seven thousand, four hundred twelve".