388888894 has 8 divisors (see below), whose sum is σ = 583746408. Its totient is φ = 194306760.

The previous prime is 388888891. The next prime is 388888897. The reversal of 388888894 is 498888883.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (388888891) and next prime (388888897).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388888891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65277 + ... + 70984.

It is an arithmetic number, because the mean of its divisors is an integer number (72968301).

Almost surely, 2^388888894 is an apocalyptic number.

388888894 is a deficient number, since it is larger than the sum of its proper divisors (194857514).

388888894 is a wasteful number, since it uses less digits than its factorization.

388888894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137690.

The product of its digits is 28311552, while the sum is 64.

The square root of 388888894 is about 19720.2660732557. The cubic root of 388888894 is about 729.9198598457.

The spelling of 388888894 in words is "three hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred ninety-four".