138756099 has 8 divisors (see below), whose sum is σ = 185729040. Its totient is φ = 92143616.

The previous prime is 138756083. The next prime is 138756119. The reversal of 138756099 is 990657831.

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 138756099 - 2⁴ = 138756083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138756199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89214 + ... + 90755.

It is an arithmetic number, because the mean of its divisors is an integer number (23216130).

Almost surely, 2^138756099 is an apocalyptic number.

138756099 is a deficient number, since it is larger than the sum of its proper divisors (46972941).

138756099 is a wasteful number, since it uses less digits than its factorization.

138756099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180229.

The product of its (nonzero) digits is 408240, while the sum is 48.

The square root of 138756099 is about 11779.4778746768. The cubic root of 138756099 is about 517.7069880753.

The spelling of 138756099 in words is "one hundred thirty-eight million, seven hundred fifty-six thousand, ninety-nine".