404621412 has 96 divisors (see below), whose sum is σ = 1040336640. Its totient is φ = 121651200.

The previous prime is 404621411. The next prime is 404621423. The reversal of 404621412 is 214126404.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (404621411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2096388 + ... + 2096580.

It is an arithmetic number, because the mean of its divisors is an integer number (10836840).

Almost surely, 2^404621412 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 404621412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (520168320).

404621412 is an abundant number, since it is smaller than the sum of its proper divisors (635715228).

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

404621412 is a wasteful number, since it uses less digits than its factorization.

404621412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453 (or 451 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 404621412 is about 20115.2035038177. The cubic root of 404621412 is about 739.6330125763.

Adding to 404621412 its reverse (214126404), we get a palindrome (618747816).

The spelling of 404621412 in words is "four hundred four million, six hundred twenty-one thousand, four hundred twelve".