138848434 has 8 divisors (see below), whose sum is σ = 212704128. Its totient is φ = 67947060.

The previous prime is 138848407. The next prime is 138848441. The reversal of 138848434 is 434848831.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 738462 + ... + 738649.

It is an arithmetic number, because the mean of its divisors is an integer number (26588016).

Almost surely, 2^138848434 is an apocalyptic number.

138848434 is a deficient number, since it is larger than the sum of its proper divisors (73855694).

138848434 is a wasteful number, since it uses less digits than its factorization.

138848434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477160.

The product of its digits is 294912, while the sum is 43.

The square root of 138848434 is about 11783.3965391987. The cubic root of 138848434 is about 517.8217983447.

The spelling of 138848434 in words is "one hundred thirty-eight million, eight hundred forty-eight thousand, four hundred thirty-four".