404643104 has 48 divisors (see below), whose sum is σ = 821106720. Its totient is φ = 196170240.

The previous prime is 404643101. The next prime is 404643131. The reversal of 404643104 is 401346404.

It is a super-2 number, since 2×404643104² = 327472083229509632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (404643101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233987 + ... + 235709.

It is an arithmetic number, because the mean of its divisors is an integer number (17106390).

Almost surely, 2^404643104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404643104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (410553360).

404643104 is an abundant number, since it is smaller than the sum of its proper divisors (416463616).

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

404643104 is a wasteful number, since it uses less digits than its factorization.

404643104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953 (or 1945 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 404643104 is about 20115.7426907385. The cubic root of 404643104 is about 739.6462297320.

Adding to 404643104 its reverse (401346404), we get a palindrome (805989508).

The spelling of 404643104 in words is "four hundred four million, six hundred forty-three thousand, one hundred four".