388860879 has 16 divisors (see below), whose sum is σ = 570810240. Its totient is φ = 233508960.

The previous prime is 388860877. The next prime is 388860949. The reversal of 388860879 is 978068883.

It is not a de Polignac number, because 388860879 - 2¹ = 388860877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388860877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50457 + ... + 57650.

It is an arithmetic number, because the mean of its divisors is an integer number (35675640).

Almost surely, 2^388860879 is an apocalyptic number.

388860879 is a deficient number, since it is larger than the sum of its proper divisors (181949361).

388860879 is a wasteful number, since it uses less digits than its factorization.

388860879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108230.

The product of its (nonzero) digits is 4644864, while the sum is 57.

The square root of 388860879 is about 19719.5557505741. Note that the first 3 decimals coincide. The cubic root of 388860879 is about 729.9023319637.

The spelling of 388860879 in words is "three hundred eighty-eight million, eight hundred sixty thousand, eight hundred seventy-nine".