138949334 has 8 divisors (see below), whose sum is σ = 208496568. Its totient is φ = 69450480.

The previous prime is 138949331. The next prime is 138949339. The reversal of 138949334 is 433949831.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138949331) by changing a digit.

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, 3767 + ... + 17090.

It is an arithmetic number, because the mean of its divisors is an integer number (26062071).

Almost surely, 2^138949334 is an apocalyptic number.

138949334 is a deficient number, since it is larger than the sum of its proper divisors (69547234).

138949334 is a wasteful number, since it uses less digits than its factorization.

138949334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24190.

The product of its digits is 279936, while the sum is 44.

The square root of 138949334 is about 11787.6772096966. The cubic root of 138949334 is about 517.9472002354.

The spelling of 138949334 in words is "one hundred thirty-eight million, nine hundred forty-nine thousand, three hundred thirty-four".