404321444 has 18 divisors (see below), whose sum is σ = 746765334. Its totient is φ = 191520000.

The previous prime is 404321443. The next prime is 404321461. The reversal of 404321444 is 444123404.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 291111844 + 113209600 = 17062^2 + 10640^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404321443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138557 + ... + 141444.

It is an arithmetic number, because the mean of its divisors is an integer number (41486963).

Almost surely, 2^404321444 is an apocalyptic number.

It is an amenable number.

404321444 is a deficient number, since it is larger than the sum of its proper divisors (342443890).

404321444 is a wasteful number, since it uses less digits than its factorization.

404321444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280043 (or 280022 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 404321444 is about 20107.7458706838. The cubic root of 404321444 is about 739.4501905780.

Adding to 404321444 its reverse (444123404), we get a palindrome (848444848).

The spelling of 404321444 in words is "four hundred four million, three hundred twenty-one thousand, four hundred forty-four".