404320434 has 64 divisors (see below), whose sum is σ = 960325632. Its totient is φ = 111081600.

The previous prime is 404320429. The next prime is 404320447. The reversal of 404320434 is 434023404.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120609 + ... + 123915.

It is an arithmetic number, because the mean of its divisors is an integer number (15005088).

Almost surely, 2^404320434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404320434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (480162816).

404320434 is an abundant number, since it is smaller than the sum of its proper divisors (556005198).

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

404320434 is a wasteful number, since it uses less digits than its factorization.

404320434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3431.

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 404320434 is about 20107.7207559683. The cubic root of 404320434 is about 739.4495748589.

Adding to 404320434 its reverse (434023404), we get a palindrome (838343838).

The spelling of 404320434 in words is "four hundred four million, three hundred twenty thousand, four hundred thirty-four".