388380047 has 16 divisors (see below), whose sum is σ = 446515200. Its totient is φ = 334356000.

The previous prime is 388380029. The next prime is 388380049. The reversal of 388380047 is 740083883.

It is not a de Polignac number, because 388380047 - 2¹² = 388375951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 388379986 and 388380013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388380049) 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, 17954 + ... + 33152.

It is an arithmetic number, because the mean of its divisors is an integer number (27907200).

Almost surely, 2^388380047 is an apocalyptic number.

388380047 is a deficient number, since it is larger than the sum of its proper divisors (58135153).

388380047 is a wasteful number, since it uses less digits than its factorization.

388380047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15334.

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 388380047 is about 19707.3602240381. The cubic root of 388380047 is about 729.6013630120.

The spelling of 388380047 in words is "three hundred eighty-eight million, three hundred eighty thousand, forty-seven".