388380403 has 4 divisors (see below), whose sum is σ = 388420240. Its totient is φ = 388340568.

The previous prime is 388380397. The next prime is 388380409. The reversal of 388380403 is 304083883.

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 an interprime number because it is at equal distance from previous prime (388380397) and next prime (388380409).

It is a cyclic number.

It is not a de Polignac number, because 388380403 - 2⁵ = 388380371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (388380409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5626 + ... + 28432.

It is an arithmetic number, because the mean of its divisors is an integer number (97105060).

Almost surely, 2^388380403 is an apocalyptic number.

388380403 is a deficient number, since it is larger than the sum of its proper divisors (39837).

388380403 is a wasteful number, since it uses less digits than its factorization.

388380403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39836.

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 388380403 is about 19707.3692561945. The cubic root of 388380403 is about 729.6015859363.

The spelling of 388380403 in words is "three hundred eighty-eight million, three hundred eighty thousand, four hundred three".