388873857 has 8 divisors (see below), whose sum is σ = 541041984. Its totient is φ = 247977488.

The previous prime is 388873853. The next prime is 388873871. The reversal of 388873857 is 758378883.

It is a happy number.

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 388873857 - 2² = 388873853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 388873797 and 388873806.

It is not an unprimeable number, because it can be changed into a prime (388873853) 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, 2817858 + ... + 2817995.

It is an arithmetic number, because the mean of its divisors is an integer number (67630248).

Almost surely, 2^388873857 is an apocalyptic number.

It is an amenable number.

388873857 is a deficient number, since it is larger than the sum of its proper divisors (152168127).

388873857 is a wasteful number, since it uses less digits than its factorization.

388873857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5635879.

The product of its digits is 9031680, while the sum is 57.

The square root of 388873857 is about 19719.8848120368. The cubic root of 388873857 is about 729.9104518918.

The spelling of 388873857 in words is "three hundred eighty-eight million, eight hundred seventy-three thousand, eight hundred fifty-seven".