404421311 has 8 divisors (see below), whose sum is σ = 462357024. Its totient is φ = 346525920.

The previous prime is 404421307. The next prime is 404421349. The reversal of 404421311 is 113124404.

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 404421311 - 2² = 404421307 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 (404421301) 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, 15881 + ... + 32573.

It is an arithmetic number, because the mean of its divisors is an integer number (57794628).

Almost surely, 2^404421311 is an apocalyptic number.

404421311 is a deficient number, since it is larger than the sum of its proper divisors (57935713).

404421311 is a wasteful number, since it uses less digits than its factorization.

404421311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20161.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 404421311 is about 20110.2290141112. The cubic root of 404421311 is about 739.5110667234.

Adding to 404421311 its reverse (113124404), we get a palindrome (517545715).

The spelling of 404421311 in words is "four hundred four million, four hundred twenty-one thousand, three hundred eleven".