138924974 has 8 divisors (see below), whose sum is σ = 213470208. Its totient is φ = 67768240.

The previous prime is 138924953. The next prime is 138925001. The reversal of 138924974 is 479429831.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 847022 + ... + 847185.

It is an arithmetic number, because the mean of its divisors is an integer number (26683776).

Almost surely, 2^138924974 is an apocalyptic number.

138924974 is a deficient number, since it is larger than the sum of its proper divisors (74545234).

138924974 is a wasteful number, since it uses less digits than its factorization.

138924974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694250.

The product of its digits is 435456, while the sum is 47.

The square root of 138924974 is about 11786.6438819538. The cubic root of 138924974 is about 517.9169303741.

The spelling of 138924974 in words is "one hundred thirty-eight million, nine hundred twenty-four thousand, nine hundred seventy-four".