388696117 has 8 divisors (see below), whose sum is σ = 397039320. Its totient is φ = 380390400.

The previous prime is 388696111. The next prime is 388696141. The reversal of 388696117 is 711696883.

It can be written as a sum of positive squares in 4 ways, for example, as 333208516 + 55487601 = 18254^2 + 7449^2 .

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 388696117 - 2¹⁵ = 388663349 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 (388696111) 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 7 ways as a sum of consecutive naturals, for example, 12109 + ... + 30397.

It is an arithmetic number, because the mean of its divisors is an integer number (49629915).

Almost surely, 2^388696117 is an apocalyptic number.

It is an amenable number.

388696117 is a deficient number, since it is larger than the sum of its proper divisors (8343203).

388696117 is a wasteful number, since it uses less digits than its factorization.

388696117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18743.

The product of its digits is 435456, while the sum is 49.

The square root of 388696117 is about 19715.3776783505. The cubic root of 388696117 is about 729.7992298318.

The spelling of 388696117 in words is "three hundred eighty-eight million, six hundred ninety-six thousand, one hundred seventeen".