404422481 has 2 divisors, whose sum is σ = 404422482. Its totient is φ = 404422480.

The previous prime is 404422463. The next prime is 404422517. The reversal of 404422481 is 184224404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 232288081 + 172134400 = 15241^2 + 13120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404422481 is a prime.

It is a super-2 number, since 2×404422481² = 327115086276390722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (404422981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202211240 + 202211241.

It is an arithmetic number, because the mean of its divisors is an integer number (202211241).

Almost surely, 2^404422481 is an apocalyptic number.

It is an amenable number.

404422481 is a deficient number, since it is larger than the sum of its proper divisors (1).

404422481 is an equidigital number, since it uses as much as digits as its factorization.

404422481 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 404422481 is about 20110.2581037639. The cubic root of 404422481 is about 739.5117798634.

Adding to 404422481 its reverse (184224404), we get a palindrome (588646885).

The spelling of 404422481 in words is "four hundred four million, four hundred twenty-two thousand, four hundred eighty-one".