388641093 has 8 divisors (see below), whose sum is σ = 536056800. Its totient is φ = 250159728.

The previous prime is 388641089. The next prime is 388641107. The reversal of 388641093 is 390146883.

It is a happy number.

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

It is not a de Polignac number, because 388641093 - 2² = 388641089 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388641023) 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, 2233483 + ... + 2233656.

It is an arithmetic number, because the mean of its divisors is an integer number (67007100).

Almost surely, 2^388641093 is an apocalyptic number.

It is an amenable number.

388641093 is a deficient number, since it is larger than the sum of its proper divisors (147415707).

388641093 is a wasteful number, since it uses less digits than its factorization.

388641093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4467171.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 388641093 is about 19713.9821700234. The cubic root of 388641093 is about 729.7647913025.

The spelling of 388641093 in words is "three hundred eighty-eight million, six hundred forty-one thousand, ninety-three".