138417139 has 16 divisors (see below), whose sum is σ = 163778560. Its totient is φ = 114475680.

The previous prime is 138417121. The next prime is 138417143. The reversal of 138417139 is 931714831.

It is a cyclic number.

It is not a de Polignac number, because 138417139 - 2⁷ = 138417011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138417098 and 138417107.

It is not an unprimeable number, because it can be changed into a prime (138417119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94537 + ... + 95989.

It is an arithmetic number, because the mean of its divisors is an integer number (10236160).

Almost surely, 2^138417139 is an apocalyptic number.

138417139 is a deficient number, since it is larger than the sum of its proper divisors (25361421).

138417139 is a wasteful number, since it uses less digits than its factorization.

138417139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1930.

The product of its digits is 18144, while the sum is 37.

The square root of 138417139 is about 11765.0813426852. The cubic root of 138417139 is about 517.2850845864.

The spelling of 138417139 in words is "one hundred thirty-eight million, four hundred seventeen thousand, one hundred thirty-nine".