388121716 has 12 divisors (see below), whose sum is σ = 685808032. Its totient is φ = 192176568.

The previous prime is 388121693. The next prime is 388121719. The reversal of 388121716 is 617121883.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388121719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470610 + ... + 471433.

Almost surely, 2^388121716 is an apocalyptic number.

It is an amenable number.

388121716 is a deficient number, since it is larger than the sum of its proper divisors (297686316).

388121716 is a wasteful number, since it uses less digits than its factorization.

388121716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942150 (or 942148 counting only the distinct ones).

The product of its digits is 16128, while the sum is 37.

The square root of 388121716 is about 19700.8049581737. The cubic root of 388121716 is about 729.4395623432.

The spelling of 388121716 in words is "three hundred eighty-eight million, one hundred twenty-one thousand, seven hundred sixteen".