138941008 has 40 divisors (see below), whose sum is σ = 278998016. Its totient is φ = 66960000.

The previous prime is 138941003. The next prime is 138941009. The reversal of 138941008 is 800149831.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138941003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184633 + ... + 185383.

Almost surely, 2^138941008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138941008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139499008).

138941008 is an abundant number, since it is smaller than the sum of its proper divisors (140057008).

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

138941008 is a wasteful number, since it uses less digits than its factorization.

138941008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163 (or 1157 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 138941008 is about 11787.3240389836. The cubic root of 138941008 is about 517.9368547030.

The spelling of 138941008 in words is "one hundred thirty-eight million, nine hundred forty-one thousand, eight".