138971704 has 64 divisors (see below), whose sum is σ = 283176000. Its totient is φ = 63765504.

The previous prime is 138971699. The next prime is 138971711. The reversal of 138971704 is 407179831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 932622 + ... + 932770.

It is an arithmetic number, because the mean of its divisors is an integer number (4424625).

Almost surely, 2^138971704 is an apocalyptic number.

It is an amenable number.

138971704 is an abundant number, since it is smaller than the sum of its proper divisors (144204296).

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

138971704 is a wasteful number, since it uses less digits than its factorization.

138971704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 348 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 138971704 is about 11788.6260437763. The cubic root of 138971704 is about 517.9749941965.

The spelling of 138971704 in words is "one hundred thirty-eight million, nine hundred seventy-one thousand, seven hundred four".