388464231 has 8 divisors (see below), whose sum is σ = 518045184. Its totient is φ = 258929720.

The previous prime is 388464203. The next prime is 388464233. The reversal of 388464231 is 132464883.

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 a de Polignac number, because none of the positive numbers 2^k-388464231 is a prime.

It is a super-2 number, since 2×388464231² = 301808917532842722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 388464231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388464233) 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 7 ways as a sum of consecutive naturals, for example, 20980 + ... + 34886.

It is an arithmetic number, because the mean of its divisors is an integer number (64755648).

Almost surely, 2^388464231 is an apocalyptic number.

388464231 is a deficient number, since it is larger than the sum of its proper divisors (129580953).

388464231 is a wasteful number, since it uses less digits than its factorization.

388464231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23221.

The product of its digits is 110592, while the sum is 39.

The square root of 388464231 is about 19709.4959600696. The cubic root of 388464231 is about 729.6540745458.

The spelling of 388464231 in words is "three hundred eighty-eight million, four hundred sixty-four thousand, two hundred thirty-one".