408044808491 has 2 divisors, whose sum is σ = 408044808492. Its totient is φ = 408044808490.

The previous prime is 408044808419. The next prime is 408044808551. The reversal of 408044808491 is 194808440804.

It is a happy number.

Together with previous prime (408044808419) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 408044808491 - 2³⁸ = 133166901547 is a prime.

It is not a weakly prime, because it can be changed into another prime (408044802491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204022404245 + 204022404246.

It is an arithmetic number, because the mean of its divisors is an integer number (204022404246).

Almost surely, 2^408044808491 is an apocalyptic number.

408044808491 is a deficient number, since it is larger than the sum of its proper divisors (1).

408044808491 is an equidigital number, since it uses as much as digits as its factorization.

408044808491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1179648, while the sum is 50.

The spelling of 408044808491 in words is "four hundred eight billion, forty-four million, eight hundred eight thousand, four hundred ninety-one".