388852509 has 8 divisors (see below), whose sum is σ = 548968320. Its totient is φ = 243985856.

The previous prime is 388852489. The next prime is 388852621. The reversal of 388852509 is 905258883.

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 388852509 - 2⁷ = 388852381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388856509) 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, 3812229 + ... + 3812330.

It is an arithmetic number, because the mean of its divisors is an integer number (68621040).

Almost surely, 2^388852509 is an apocalyptic number.

It is an amenable number.

388852509 is a deficient number, since it is larger than the sum of its proper divisors (160115811).

388852509 is a wasteful number, since it uses less digits than its factorization.

388852509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7624579.

The product of its (nonzero) digits is 691200, while the sum is 48.

The square root of 388852509 is about 19719.3435235557. The cubic root of 388852509 is about 729.8970950211.

The spelling of 388852509 in words is "three hundred eighty-eight million, eight hundred fifty-two thousand, five hundred nine".