404344144 has 10 divisors (see below), whose sum is σ = 783416810. Its totient is φ = 202172064.

The previous prime is 404344139. The next prime is 404344147. The reversal of 404344144 is 441443404.

It can be written as a sum of positive squares in only one way, i.e., 384630544 + 19713600 = 19612^2 + 4440^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404344147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12635739 + ... + 12635770.

It is an arithmetic number, because the mean of its divisors is an integer number (78341681).

Almost surely, 2^404344144 is an apocalyptic number.

It is an amenable number.

404344144 is a deficient number, since it is larger than the sum of its proper divisors (379072666).

404344144 is a wasteful number, since it uses less digits than its factorization.

404344144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25271517 (or 25271511 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

The square root of 404344144 is about 20108.3103218545. The cubic root of 404344144 is about 739.4640287468.

Adding to 404344144 its reverse (441443404), we get a palindrome (845787548).

The spelling of 404344144 in words is "four hundred four million, three hundred forty-four thousand, one hundred forty-four".