388532885 has 8 divisors (see below), whose sum is σ = 502104120. Its totient is φ = 286916544.

The previous prime is 388532873. The next prime is 388532887. The reversal of 388532885 is 588235883.

It can be written as a sum of positive squares in 4 ways, for example, as 16467364 + 372065521 = 4058^2 + 19289^2 .

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 388532885 - 2²⁶ = 321424021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388532887) 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, 2988650 + ... + 2988779.

It is an arithmetic number, because the mean of its divisors is an integer number (62763015).

Almost surely, 2^388532885 is an apocalyptic number.

It is an amenable number.

388532885 is a deficient number, since it is larger than the sum of its proper divisors (113571235).

388532885 is a wasteful number, since it uses less digits than its factorization.

388532885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5977447.

The product of its digits is 1843200, while the sum is 50.

The square root of 388532885 is about 19711.2375309111. The cubic root of 388532885 is about 729.6970563839.

The spelling of 388532885 in words is "three hundred eighty-eight million, five hundred thirty-two thousand, eight hundred eighty-five".