138899677 has 8 divisors (see below), whose sum is σ = 162614592. Its totient is φ = 116152800.

The previous prime is 138899669. The next prime is 138899689. The reversal of 138899677 is 776998831.

138899677 is digitally balanced in base 2, 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 cyclic number.

It is not a de Polignac number, because 138899677 - 2³ = 138899669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138899377) 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, 241699 + ... + 242272.

It is an arithmetic number, because the mean of its divisors is an integer number (20326824).

Almost surely, 2^138899677 is an apocalyptic number.

It is an amenable number.

138899677 is a deficient number, since it is larger than the sum of its proper divisors (23714915).

138899677 is an equidigital number, since it uses as much as digits as its factorization.

138899677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484019.

The product of its digits is 4572288, while the sum is 58.

The square root of 138899677 is about 11785.5707116796. The cubic root of 138899677 is about 517.8854924463.

The spelling of 138899677 in words is "one hundred thirty-eight million, eight hundred ninety-nine thousand, six hundred seventy-seven".