408740867 has 2 divisors, whose sum is σ = 408740868. Its totient is φ = 408740866.

The previous prime is 408740837. The next prime is 408740869. The reversal of 408740867 is 768047804.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 408740867 - 2¹⁰ = 408739843 is a prime.

Together with 408740869, 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 (408740869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204370433 + 204370434.

It is an arithmetic number, because the mean of its divisors is an integer number (204370434).

Almost surely, 2^408740867 is an apocalyptic number.

408740867 is a deficient number, since it is larger than the sum of its proper divisors (1).

408740867 is an equidigital number, since it uses as much as digits as its factorization.

408740867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 301056, while the sum is 44.

The square root of 408740867 is about 20217.3407499602. The cubic root of 408740867 is about 742.1346126646.

The spelling of 408740867 in words is "four hundred eight million, seven hundred forty thousand, eight hundred sixty-seven".