404305481 has 2 divisors, whose sum is σ = 404305482. Its totient is φ = 404305480.

The previous prime is 404305459. The next prime is 404305511. The reversal of 404305481 is 184503404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 341658256 + 62647225 = 18484^2 + 7915^2 .

It is a cyclic number.

It is not a de Polignac number, because 404305481 - 2⁶ = 404305417 is a prime.

It is a super-2 number, since 2×404305481² = 326925843933282722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (404301481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202152740 + 202152741.

It is an arithmetic number, because the mean of its divisors is an integer number (202152741).

Almost surely, 2^404305481 is an apocalyptic number.

It is an amenable number.

404305481 is a deficient number, since it is larger than the sum of its proper divisors (1).

404305481 is an equidigital number, since it uses as much as digits as its factorization.

404305481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 404305481 is about 20107.3489301797. The cubic root of 404305481 is about 739.4404590480.

Adding to 404305481 its reverse (184503404), we get a palindrome (588808885).

The spelling of 404305481 in words is "four hundred four million, three hundred five thousand, four hundred eighty-one".