404440481 has 2 divisors, whose sum is σ = 404440482. Its totient is φ = 404440480.

The previous prime is 404440471. The next prime is 404440501. The reversal of 404440481 is 184044404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 400360081 + 4080400 = 20009^2 + 2020^2 .

It is a cyclic number.

It is not a de Polignac number, because 404440481 - 2⁶ = 404440417 is a prime.

It is a super-2 number, since 2×404440481² = 327144205343022722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (404440471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202220240 + 202220241.

It is an arithmetic number, because the mean of its divisors is an integer number (202220241).

Almost surely, 2^404440481 is an apocalyptic number.

It is an amenable number.

404440481 is a deficient number, since it is larger than the sum of its proper divisors (1).

404440481 is an equidigital number, since it uses as much as digits as its factorization.

404440481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8192, while the sum is 29.

The square root of 404440481 is about 20110.7056315784. The cubic root of 404440481 is about 739.5227510756.

Adding to 404440481 its reverse (184044404), we get a palindrome (588484885).

The spelling of 404440481 in words is "four hundred four million, four hundred forty thousand, four hundred eighty-one".