138941912 has 8 divisors (see below), whose sum is σ = 260516100. Its totient is φ = 69470952.

The previous prime is 138941909. The next prime is 138941921. The reversal of 138941912 is 219149831.

It is a tau number, because it is divible by the number of its divisors (8).

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, 8683862 + ... + 8683877.

Almost surely, 2^138941912 is an apocalyptic number.

It is an amenable number.

138941912 is a deficient number, since it is larger than the sum of its proper divisors (121574188).

138941912 is a wasteful number, since it uses less digits than its factorization.

138941912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17367745 (or 17367741 counting only the distinct ones).

The product of its digits is 15552, while the sum is 38.

The square root of 138941912 is about 11787.3623851988. The cubic root of 138941912 is about 517.9379779948.

The spelling of 138941912 in words is "one hundred thirty-eight million, nine hundred forty-one thousand, nine hundred twelve".