138332739 has 8 divisors (see below), whose sum is σ = 184600080. Its totient is φ = 92143616.

The previous prime is 138332693. The next prime is 138332783. The reversal of 138332739 is 937233831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138332739 - 2¹³ = 138324547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138332697 and 138332706.

It is not an unprimeable number, because it can be changed into a prime (138332839) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 15294 + ... + 22595.

It is an arithmetic number, because the mean of its divisors is an integer number (23075010).

Almost surely, 2^138332739 is an apocalyptic number.

138332739 is a deficient number, since it is larger than the sum of its proper divisors (46267341).

138332739 is a wasteful number, since it uses less digits than its factorization.

138332739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39109.

The product of its digits is 81648, while the sum is 39.

The square root of 138332739 is about 11761.4939102140. The cubic root of 138332739 is about 517.1799248301.

The spelling of 138332739 in words is "one hundred thirty-eight million, three hundred thirty-two thousand, seven hundred thirty-nine".