138336959 has 8 divisors (see below), whose sum is σ = 141477552. Its totient is φ = 135224640.

The previous prime is 138336899. The next prime is 138337021. The reversal of 138336959 is 959633831.

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 138336959 - 2⁸ = 138336703 is a prime.

It is a super-2 number, since 2×138336959² = 38274228450735362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138336859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2987 + ... + 16899.

It is an arithmetic number, because the mean of its divisors is an integer number (17684694).

Almost surely, 2^138336959 is an apocalyptic number.

138336959 is a deficient number, since it is larger than the sum of its proper divisors (3140593).

138336959 is a wasteful number, since it uses less digits than its factorization.

138336959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14137.

The product of its digits is 524880, while the sum is 47.

The square root of 138336959 is about 11761.6733078249. The cubic root of 138336959 is about 517.1851838336.

The spelling of 138336959 in words is "one hundred thirty-eight million, three hundred thirty-six thousand, nine hundred fifty-nine".