138676459 has 8 divisors (see below), whose sum is σ = 146094480. Its totient is φ = 131270400.

The previous prime is 138676457. The next prime is 138676487. The reversal of 138676459 is 954676831.

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 138676459 - 2¹ = 138676457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138676451) 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, 30579 + ... + 34819.

It is an arithmetic number, because the mean of its divisors is an integer number (18261810).

Almost surely, 2^138676459 is an apocalyptic number.

138676459 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

138676459 is a deficient number, since it is larger than the sum of its proper divisors (7418021).

138676459 is a wasteful number, since it uses less digits than its factorization.

138676459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5981.

The product of its digits is 1088640, while the sum is 49.

The square root of 138676459 is about 11776.0969340440. The cubic root of 138676459 is about 517.6079219791.

The spelling of 138676459 in words is "one hundred thirty-eight million, six hundred seventy-six thousand, four hundred fifty-nine".