388482433 has 4 divisors (see below), whose sum is σ = 389348100. Its totient is φ = 387616768.

The previous prime is 388482407. The next prime is 388482449. The reversal of 388482433 is 334284883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 334284883 = 131 ⋅2551793.

It can be written as a sum of positive squares in 2 ways, for example, as 200024449 + 188457984 = 14143^2 + 13728^2 .

It is a cyclic number.

It is not a de Polignac number, because 388482433 - 2⁹ = 388481921 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 388482433.

It is not an unprimeable number, because it can be changed into a prime (388482473) 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, 432160 + ... + 433057.

It is an arithmetic number, because the mean of its divisors is an integer number (97337025).

Almost surely, 2^388482433 is an apocalyptic number.

It is an amenable number.

388482433 is a deficient number, since it is larger than the sum of its proper divisors (865667).

388482433 is an equidigital number, since it uses as much as digits as its factorization.

388482433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865666.

The product of its digits is 442368, while the sum is 43.

The square root of 388482433 is about 19709.9577117760. The cubic root of 388482433 is about 729.6654706667.

The spelling of 388482433 in words is "three hundred eighty-eight million, four hundred eighty-two thousand, four hundred thirty-three".