388473661 has 8 divisors (see below), whose sum is σ = 394740864. Its totient is φ = 382232160.

The previous prime is 388473649. The next prime is 388473691. The reversal of 388473661 is 166374883.

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 388473661 - 2⁵ = 388473629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388473691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25290 + ... + 37636.

It is an arithmetic number, because the mean of its divisors is an integer number (49342608).

Almost surely, 2^388473661 is an apocalyptic number.

It is an amenable number.

388473661 is a deficient number, since it is larger than the sum of its proper divisors (6267203).

388473661 is a wasteful number, since it uses less digits than its factorization.

388473661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12851.

The product of its digits is 580608, while the sum is 46.

The square root of 388473661 is about 19709.7351834062. The cubic root of 388473661 is about 729.6599786348.

The spelling of 388473661 in words is "three hundred eighty-eight million, four hundred seventy-three thousand, six hundred sixty-one".