404244231 has 4 divisors (see below), whose sum is σ = 538992312. Its totient is φ = 269496152.

The previous prime is 404244193. The next prime is 404244263. The reversal of 404244231 is 132442404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 404244231 - 2⁶ = 404244167 is a prime.

It is a super-2 number, since 2×404244231² = 326826796593562722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404249231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67374036 + ... + 67374041.

It is an arithmetic number, because the mean of its divisors is an integer number (134748078).

Almost surely, 2^404244231 is an apocalyptic number.

404244231 is a deficient number, since it is larger than the sum of its proper divisors (134748081).

404244231 is a wasteful number, since it uses less digits than its factorization.

404244231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134748080.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 404244231 is about 20105.8257975145. The cubic root of 404244231 is about 739.4031168093.

Adding to 404244231 its reverse (132442404), we get a palindrome (536686635).

The spelling of 404244231 in words is "four hundred four million, two hundred forty-four thousand, two hundred thirty-one".