388048405 has 4 divisors (see below), whose sum is σ = 465658092. Its totient is φ = 310438720.

The previous prime is 388048399. The next prime is 388048411. The reversal of 388048405 is 504840883.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (388048399) and next prime (388048411).

It can be written as a sum of positive squares in 2 ways, for example, as 203034001 + 185014404 = 14249^2 + 13602^2 .

It is not a de Polignac number, because 388048405 - 2⁹ = 388047893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38804836 + ... + 38804845.

It is an arithmetic number, because the mean of its divisors is an integer number (116414523).

Almost surely, 2^388048405 is an apocalyptic number.

It is an amenable number.

388048405 is a deficient number, since it is larger than the sum of its proper divisors (77609687).

388048405 is an equidigital number, since it uses as much as digits as its factorization.

388048405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77609686.

The product of its (nonzero) digits is 122880, while the sum is 40.

The square root of 388048405 is about 19698.9442610511. The cubic root of 388048405 is about 729.3936323262.

The spelling of 388048405 in words is "three hundred eighty-eight million, forty-eight thousand, four hundred five".