138425677 has 8 divisors (see below), whose sum is σ = 149206176. Its totient is φ = 127664112.

The previous prime is 138425663. The next prime is 138425681. The reversal of 138425677 is 776524831.

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 138425677 - 2⁷ = 138425549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138425687) 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, 12918 + ... + 21064.

It is an arithmetic number, because the mean of its divisors is an integer number (18650772).

Almost surely, 2^138425677 is an apocalyptic number.

It is an amenable number.

138425677 is a deficient number, since it is larger than the sum of its proper divisors (10780499).

138425677 is a wasteful number, since it uses less digits than its factorization.

138425677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9467.

The product of its digits is 282240, while the sum is 43.

The square root of 138425677 is about 11765.4441905098. Note that the first 3 decimals coincide. The cubic root of 138425677 is about 517.2957202858.

The spelling of 138425677 in words is "one hundred thirty-eight million, four hundred twenty-five thousand, six hundred seventy-seven".