404144092 has 48 divisors (see below), whose sum is σ = 786240000. Its totient is φ = 180236160.

The previous prime is 404144053. The next prime is 404144107. The reversal of 404144092 is 290441404.

It is a self number, because there is not a number n which added to its sum of digits gives 404144092.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 809659 + ... + 810157.

It is an arithmetic number, because the mean of its divisors is an integer number (16380000).

Almost surely, 2^404144092 is an apocalyptic number.

It is an amenable number.

404144092 is a deficient number, since it is larger than the sum of its proper divisors (382095908).

404144092 is a wasteful number, since it uses less digits than its factorization.

404144092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826 (or 824 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 404144092 is about 20103.3353451610. The cubic root of 404144092 is about 739.3420570193.

Adding to 404144092 its reverse (290441404), we get a palindrome (694585496).

The spelling of 404144092 in words is "four hundred four million, one hundred forty-four thousand, ninety-two".