138864332 has 12 divisors (see below), whose sum is σ = 244418496. Its totient is φ = 69030480.

The previous prime is 138864307. The next prime is 138864343. The reversal of 138864332 is 233468831.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99644 + ... + 101027.

It is an arithmetic number, because the mean of its divisors is an integer number (20368208).

Almost surely, 2^138864332 is an apocalyptic number.

It is an amenable number.

138864332 is a deficient number, since it is larger than the sum of its proper divisors (105554164).

138864332 is a wasteful number, since it uses less digits than its factorization.

138864332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200848 (or 200846 counting only the distinct ones).

The product of its digits is 82944, while the sum is 38.

The square root of 138864332 is about 11784.0711131595. The cubic root of 138864332 is about 517.8415609413.

The spelling of 138864332 in words is "one hundred thirty-eight million, eight hundred sixty-four thousand, three hundred thirty-two".