388670471447 has 4 divisors (see below), whose sum is σ = 388671822240. Its totient is φ = 388669120656.

The previous prime is 388670471437. The next prime is 388670471459. The reversal of 388670471447 is 744174076883.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 388670471447 - 2⁶ = 388670471383 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 (388670471437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51983 + ... + 883200.

It is an arithmetic number, because the mean of its divisors is an integer number (97167955560).

Almost surely, 2^388670471447 is an apocalyptic number.

388670471447 is a deficient number, since it is larger than the sum of its proper divisors (1350793).

388670471447 is an equidigital number, since it uses as much as digits as its factorization.

388670471447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350792.

The product of its (nonzero) digits is 25288704, while the sum is 59.

The spelling of 388670471447 in words is "three hundred eighty-eight billion, six hundred seventy million, four hundred seventy-one thousand, four hundred forty-seven".