138587086 has 8 divisors (see below), whose sum is σ = 226778904. Its totient is φ = 62994120.

The previous prime is 138587039. The next prime is 138587087. The reversal of 138587086 is 680785831.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138587087) 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 3 ways as a sum of consecutive naturals, for example, 3149685 + ... + 3149728.

It is an arithmetic number, because the mean of its divisors is an integer number (28347363).

Almost surely, 2^138587086 is an apocalyptic number.

138587086 is a deficient number, since it is larger than the sum of its proper divisors (88191818).

138587086 is a wasteful number, since it uses less digits than its factorization.

138587086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6299426.

The product of its (nonzero) digits is 322560, while the sum is 46.

The square root of 138587086 is about 11772.3016441136. The cubic root of 138587086 is about 517.4967035971.

The spelling of 138587086 in words is "one hundred thirty-eight million, five hundred eighty-seven thousand, eighty-six".