388305877 has 8 divisors (see below), whose sum is σ = 392131872. Its totient is φ = 384493200.

The previous prime is 388305859. The next prime is 388305881. The reversal of 388305877 is 778503883.

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 388305877 - 2¹¹ = 388303829 is a prime.

It is a super-2 number, since 2×388305877² = 301562908225478258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 388305877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388305847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61303 + ... + 67339.

It is an arithmetic number, because the mean of its divisors is an integer number (49016484).

Almost surely, 2^388305877 is an apocalyptic number.

It is an amenable number.

388305877 is a deficient number, since it is larger than the sum of its proper divisors (3825995).

388305877 is a wasteful number, since it uses less digits than its factorization.

388305877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6659.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The square root of 388305877 is about 19705.4783499412. The cubic root of 388305877 is about 729.5549153991.

The spelling of 388305877 in words is "three hundred eighty-eight million, three hundred five thousand, eight hundred seventy-seven".