404040303221 has 8 divisors (see below), whose sum is σ = 419707061400. Its totient is φ = 388489167360.

The previous prime is 404040303217. The next prime is 404040303241. The reversal of 404040303221 is 122303040404.

It can be written as a sum of positive squares in 4 ways, for example, as 44262268996 + 359778034225 = 210386^2 + 599815^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 404040303221 - 2² = 404040303217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404040303241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28898456 + ... + 28912433.

It is an arithmetic number, because the mean of its divisors is an integer number (52463382675).

Almost surely, 2^404040303221 is an apocalyptic number.

It is an amenable number.

404040303221 is a deficient number, since it is larger than the sum of its proper divisors (15666758179).

404040303221 is a wasteful number, since it uses less digits than its factorization.

404040303221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57811159.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 404040303221 its reverse (122303040404), we get a palindrome (526343343625).

The spelling of 404040303221 in words is "four hundred four billion, forty million, three hundred three thousand, two hundred twenty-one".