404220592 has 20 divisors (see below), whose sum is σ = 824397880. Its totient is φ = 191472768.

The previous prime is 404220571. The next prime is 404220617. The reversal of 404220592 is 295022404.

It is a self number, because there is not a number n which added to its sum of digits gives 404220592.

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, 664533 + ... + 665140.

It is an arithmetic number, because the mean of its divisors is an integer number (41219894).

Almost surely, 2^404220592 is an apocalyptic number.

It is an amenable number.

404220592 is an abundant number, since it is smaller than the sum of its proper divisors (420177288).

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

404220592 is a wasteful number, since it uses less digits than its factorization.

404220592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329700 (or 1329694 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 404220592 is about 20105.2379244813. The cubic root of 404220592 is about 739.3887038301.

Adding to 404220592 its reverse (295022404), we get a palindrome (699242996).

The spelling of 404220592 in words is "four hundred four million, two hundred twenty thousand, five hundred ninety-two".