408582481 has 2 divisors, whose sum is σ = 408582482. Its totient is φ = 408582480.

The previous prime is 408582469. The next prime is 408582497. The reversal of 408582481 is 184285804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 239166225 + 169416256 = 15465^2 + 13016^2 .

It is a cyclic number.

It is not a de Polignac number, because 408582481 - 2⁹ = 408581969 is a prime.

It is a super-2 number, since 2×408582481² = 333879287560230722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (408582401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204291240 + 204291241.

It is an arithmetic number, because the mean of its divisors is an integer number (204291241).

Almost surely, 2^408582481 is an apocalyptic number.

It is an amenable number.

408582481 is a deficient number, since it is larger than the sum of its proper divisors (1).

408582481 is an equidigital number, since it uses as much as digits as its factorization.

408582481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81920, while the sum is 40.

The square root of 408582481 is about 20213.4232875087. The cubic root of 408582481 is about 742.0387418834.

The spelling of 408582481 in words is "four hundred eight million, five hundred eighty-two thousand, four hundred eighty-one".