138834349 has 8 divisors (see below), whose sum is σ = 147903840. Its totient is φ = 129941136.

The previous prime is 138834343. The next prime is 138834361. The reversal of 138834349 is 943438831.

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 138834349 - 2³ = 138834341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138834341) 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, 42442 + ... + 45595.

It is an arithmetic number, because the mean of its divisors is an integer number (18487980).

Almost surely, 2^138834349 is an apocalyptic number.

138834349 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

138834349 is a deficient number, since it is larger than the sum of its proper divisors (9069491).

138834349 is an equidigital number, since it uses as much as digits as its factorization.

138834349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88139.

The product of its digits is 248832, while the sum is 43.

The square root of 138834349 is about 11782.7988610516. The cubic root of 138834349 is about 517.8042882044.

The spelling of 138834349 in words is "one hundred thirty-eight million, eight hundred thirty-four thousand, three hundred forty-nine".