138852879 has 8 divisors (see below), whose sum is σ = 201967872. Its totient is φ = 84153240.

The previous prime is 138852871. The next prime is 138852907. The reversal of 138852879 is 978258831.

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

It is not a de Polignac number, because 138852879 - 2³ = 138852871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138852871) 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 7 ways as a sum of consecutive naturals, for example, 2103799 + ... + 2103864.

It is an arithmetic number, because the mean of its divisors is an integer number (25245984).

Almost surely, 2^138852879 is an apocalyptic number.

138852879 is a deficient number, since it is larger than the sum of its proper divisors (63114993).

138852879 is a wasteful number, since it uses less digits than its factorization.

138852879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4207677.

The product of its digits is 967680, while the sum is 51.

The square root of 138852879 is about 11783.5851505389. The cubic root of 138852879 is about 517.8273240182.

The spelling of 138852879 in words is "one hundred thirty-eight million, eight hundred fifty-two thousand, eight hundred seventy-nine".