408367484891 has 2 divisors, whose sum is σ = 408367484892. Its totient is φ = 408367484890.

The previous prime is 408367484849. The next prime is 408367484939. The reversal of 408367484891 is 198484763804.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 408367484891 - 2¹⁴ = 408367468507 is a prime.

It is a super-2 number, since 2×408367484891² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (408367484821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204183742445 + 204183742446.

It is an arithmetic number, because the mean of its divisors is an integer number (204183742446).

Almost surely, 2^408367484891 is an apocalyptic number.

408367484891 is a deficient number, since it is larger than the sum of its proper divisors (1).

408367484891 is an equidigital number, since it uses as much as digits as its factorization.

408367484891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37158912, while the sum is 62.

The spelling of 408367484891 in words is "four hundred eight billion, three hundred sixty-seven million, four hundred eighty-four thousand, eight hundred ninety-one".