404144234 has 12 divisors (see below), whose sum is σ = 656436006. Its totient is φ = 186527952.

The previous prime is 404144177. The next prime is 404144249. The reversal of 404144234 is 432441404.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 162435025 + 241709209 = 12745^2 + 15547^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 597509 + ... + 598184.

Almost surely, 2^404144234 is an apocalyptic number.

404144234 is a deficient number, since it is larger than the sum of its proper divisors (252291772).

404144234 is a wasteful number, since it uses less digits than its factorization.

404144234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195721 (or 1195708 counting only the distinct ones).

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

The square root of 404144234 is about 20103.3388769130. The cubic root of 404144234 is about 739.3421436110.

Adding to 404144234 its reverse (432441404), we get a palindrome (836585638).

The spelling of 404144234 in words is "four hundred four million, one hundred forty-four thousand, two hundred thirty-four".