404021534430 has 32 divisors (see below), whose sum is σ = 969679265184. Its totient is φ = 107736011136.

The previous prime is 404021534393. The next prime is 404021534431. The reversal of 404021534430 is 34435120404.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404021534431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1002744 + ... + 1346676.

It is an arithmetic number, because the mean of its divisors is an integer number (30302477037).

Almost surely, 2^404021534430 is an apocalyptic number.

404021534430 is an abundant number, since it is smaller than the sum of its proper divisors (565657730754).

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

404021534430 is a wasteful number, since it uses less digits than its factorization.

404021534430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383100.

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 404021534430 its reverse (34435120404), we get a palindrome (438456654834).

The spelling of 404021534430 in words is "four hundred four billion, twenty-one million, five hundred thirty-four thousand, four hundred thirty".