138755449 has 8 divisors (see below), whose sum is σ = 159090048. Its totient is φ = 118548960.

The previous prime is 138755447. The next prime is 138755467. The reversal of 138755449 is 944557831.

138755449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 138755449 - 2¹ = 138755447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138755399 and 138755408.

It is not an unprimeable number, because it can be changed into a prime (138755447) 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, 29692 + ... + 34045.

It is an arithmetic number, because the mean of its divisors is an integer number (19886256).

Almost surely, 2^138755449 is an apocalyptic number.

It is an amenable number.

138755449 is a deficient number, since it is larger than the sum of its proper divisors (20334599).

138755449 is an equidigital number, since it uses as much as digits as its factorization.

138755449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64055.

The product of its digits is 604800, while the sum is 46.

The square root of 138755449 is about 11779.4502842875. The cubic root of 138755449 is about 517.7061796782.

The spelling of 138755449 in words is "one hundred thirty-eight million, seven hundred fifty-five thousand, four hundred forty-nine".