388654381 has 4 divisors (see below), whose sum is σ = 388920064. Its totient is φ = 388388700.

The previous prime is 388654307. The next prime is 388654397. The reversal of 388654381 is 183456883.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 388654381 - 2²⁷ = 254436653 is a prime.

It is a super-2 number, since 2×388654381² = 302104455740986322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388655381) 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, 130635 + ... + 133576.

It is an arithmetic number, because the mean of its divisors is an integer number (97230016).

Almost surely, 2^388654381 is an apocalyptic number.

It is an amenable number.

388654381 is a deficient number, since it is larger than the sum of its proper divisors (265683).

388654381 is a wasteful number, since it uses less digits than its factorization.

388654381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265682.

The product of its digits is 552960, while the sum is 46.

The square root of 388654381 is about 19714.3191868246. The cubic root of 388654381 is about 729.7731083198.

The spelling of 388654381 in words is "three hundred eighty-eight million, six hundred fifty-four thousand, three hundred eighty-one".