384540405 has 8 divisors (see below), whose sum is σ = 615264672. Its totient is φ = 205088208.

The previous prime is 384540397. The next prime is 384540419. The reversal of 384540405 is 504045483.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 384540405 - 2³ = 384540397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12817999 + ... + 12818028.

It is an arithmetic number, because the mean of its divisors is an integer number (76908084).

Almost surely, 2^384540405 is an apocalyptic number.

It is an amenable number.

384540405 is a deficient number, since it is larger than the sum of its proper divisors (230724267).

384540405 is a wasteful number, since it uses less digits than its factorization.

384540405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25636035.

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 384540405 is about 19609.7018080337. The cubic root of 384540405 is about 727.1890429540.

Adding to 384540405 its reverse (504045483), we get a palindrome (888585888).

The spelling of 384540405 in words is "three hundred eighty-four million, five hundred forty thousand, four hundred five".