408208741 has 2 divisors, whose sum is σ = 408208742. Its totient is φ = 408208740.

The previous prime is 408208739. The next prime is 408208769. The reversal of 408208741 is 147802804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 281736225 + 126472516 = 16785^2 + 11246^2 .

It is a cyclic number.

It is not a de Polignac number, because 408208741 - 2¹ = 408208739 is a prime.

Together with 408208739, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 408208697 and 408208706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (408208441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204104370 + 204104371.

It is an arithmetic number, because the mean of its divisors is an integer number (204104371).

Almost surely, 2^408208741 is an apocalyptic number.

It is an amenable number.

408208741 is a deficient number, since it is larger than the sum of its proper divisors (1).

408208741 is an equidigital number, since it uses as much as digits as its factorization.

408208741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 408208741 is about 20204.1763257006. The cubic root of 408208741 is about 741.8124194351.

The spelling of 408208741 in words is "four hundred eight million, two hundred eight thousand, seven hundred forty-one".