138933606 has 32 divisors (see below), whose sum is σ = 328515840. Its totient is φ = 38326176.

The previous prime is 138933601. The next prime is 138933629. The reversal of 138933606 is 606339831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138933601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55816 + ... + 58251.

It is an arithmetic number, because the mean of its divisors is an integer number (10266120).

Almost surely, 2^138933606 is an apocalyptic number.

138933606 is an abundant number, since it is smaller than the sum of its proper divisors (189582234).

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

138933606 is a wasteful number, since it uses less digits than its factorization.

138933606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114108.

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 138933606 is about 11787.0100534444. The cubic root of 138933606 is about 517.9276569464.

The spelling of 138933606 in words is "one hundred thirty-eight million, nine hundred thirty-three thousand, six hundred six".