404104040 has 32 divisors (see below), whose sum is σ = 910235880. Its totient is φ = 161463552.

The previous prime is 404104031. The next prime is 404104049. The reversal of 404104040 is 40401404.

It is an interprime number because it is at equal distance from previous prime (404104031) and next prime (404104049).

It can be written as a sum of positive squares in 4 ways, for example, as 400080004 + 4024036 = 20002^2 + 2006^2 .

It is not an unprimeable number, because it can be changed into a prime (404104049) 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 7 ways as a sum of consecutive naturals, for example, 34814 + ... + 44946.

Almost surely, 2^404104040 is an apocalyptic number.

404104040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404104040 is an abundant number, since it is smaller than the sum of its proper divisors (506131840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

404104040 is a wasteful number, since it uses less digits than its factorization.

404104040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11141 (or 11137 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 404104040 is about 20102.3391673705. The cubic root of 404104040 is about 739.3176324746.

Adding to 404104040 its reverse (40401404), we get a palindrome (444505444).

The spelling of 404104040 in words is "four hundred four million, one hundred four thousand, forty".