388877839 has 16 divisors (see below), whose sum is σ = 475158528. Its totient is φ = 310660992.

The previous prime is 388877759. The next prime is 388877869. The reversal of 388877839 is 938778883.

It is not a de Polignac number, because 388877839 - 2⁷ = 388877711 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 (388877869) 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 15 ways as a sum of consecutive naturals, for example, 3607 + ... + 28120.

It is an arithmetic number, because the mean of its divisors is an integer number (29697408).

Almost surely, 2^388877839 is an apocalyptic number.

388877839 is a deficient number, since it is larger than the sum of its proper divisors (86280689).

388877839 is a wasteful number, since it uses less digits than its factorization.

388877839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31854.

The product of its digits is 16257024, while the sum is 61.

The square root of 388877839 is about 19719.9857758569. The cubic root of 388877839 is about 729.9129432682.

The spelling of 388877839 in words is "three hundred eighty-eight million, eight hundred seventy-seven thousand, eight hundred thirty-nine".