408847081 has 2 divisors, whose sum is σ = 408847082. Its totient is φ = 408847080.

The previous prime is 408847079. The next prime is 408847099. The reversal of 408847081 is 180748804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 376981056 + 31866025 = 19416^2 + 5645^2 .

It is a cyclic number.

It is not a de Polignac number, because 408847081 - 2¹ = 408847079 is a prime.

It is a super-2 number, since 2×408847081² = 334311871284441122, which contains 22 as substring.

Together with 408847079, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (408847051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204423540 + 204423541.

It is an arithmetic number, because the mean of its divisors is an integer number (204423541).

Almost surely, 2^408847081 is an apocalyptic number.

It is an amenable number.

408847081 is a deficient number, since it is larger than the sum of its proper divisors (1).

408847081 is an equidigital number, since it uses as much as digits as its factorization.

408847081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57344, while the sum is 40.

The square root of 408847081 is about 20219.9673837521. The cubic root of 408847081 is about 742.1988899491.

The spelling of 408847081 in words is "four hundred eight million, eight hundred forty-seven thousand, eighty-one".