138860774 has 8 divisors (see below), whose sum is σ = 224313600. Its totient is φ = 64089576.

The previous prime is 138860773. The next prime is 138860801. The reversal of 138860774 is 477068831.

138860774 is digitally balanced in base 3, 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (138860773) 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 3 ways as a sum of consecutive naturals, for example, 2670374 + ... + 2670425.

It is an arithmetic number, because the mean of its divisors is an integer number (28039200).

Almost surely, 2^138860774 is an apocalyptic number.

138860774 is a deficient number, since it is larger than the sum of its proper divisors (85452826).

138860774 is a wasteful number, since it uses less digits than its factorization.

138860774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5340814.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 138860774 is about 11783.9201456901. The cubic root of 138860774 is about 517.8371381689.

The spelling of 138860774 in words is "one hundred thirty-eight million, eight hundred sixty thousand, seven hundred seventy-four".