384421404 has 12 divisors (see below), whose sum is σ = 896983304. Its totient is φ = 128140464.

The previous prime is 384421381. The next prime is 384421423. The reversal of 384421404 is 404124483.

It is a tau number, because it is divible by the number of its divisors (12).

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, 16017547 + ... + 16017570.

Almost surely, 2^384421404 is an apocalyptic number.

It is an amenable number.

384421404 is an abundant number, since it is smaller than the sum of its proper divisors (512561900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

384421404 is a wasteful number, since it uses less digits than its factorization.

384421404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32035124 (or 32035122 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

The square root of 384421404 is about 19606.6673353734. The cubic root of 384421404 is about 727.1140225311.

Adding to 384421404 its reverse (404124483), we get a palindrome (788545887).

The spelling of 384421404 in words is "three hundred eighty-four million, four hundred twenty-one thousand, four hundred four".