404240222 has 32 divisors (see below), whose sum is σ = 645602400. Its totient is φ = 189524608.

The previous prime is 404240209. The next prime is 404240261. The reversal of 404240222 is 222042404.

It is a junction number, because it is equal to n+sod(n) for n = 404240194 and 404240203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328304 + ... + 329532.

It is an arithmetic number, because the mean of its divisors is an integer number (20175075).

Almost surely, 2^404240222 is an apocalyptic number.

404240222 is a deficient number, since it is larger than the sum of its proper divisors (241362178).

404240222 is a wasteful number, since it uses less digits than its factorization.

404240222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420.

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 404240222 is about 20105.7260997956. The cubic root of 404240222 is about 739.4006725139.

Adding to 404240222 its reverse (222042404), we get a palindrome (626282626).

The spelling of 404240222 in words is "four hundred four million, two hundred forty thousand, two hundred twenty-two".