408119869 has 2 divisors, whose sum is σ = 408119870. Its totient is φ = 408119868.

The previous prime is 408119851. The next prime is 408119903. The reversal of 408119869 is 968911804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 347076900 + 61042969 = 18630^2 + 7813^2 .

It is a cyclic number.

It is not a de Polignac number, because 408119869 - 2⁷ = 408119741 is a prime.

It is a super-2 number, since 2×408119869² = 333123654945154322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (408119809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204059934 + 204059935.

It is an arithmetic number, because the mean of its divisors is an integer number (204059935).

Almost surely, 2^408119869 is an apocalyptic number.

It is an amenable number.

408119869 is a deficient number, since it is larger than the sum of its proper divisors (1).

408119869 is an equidigital number, since it uses as much as digits as its factorization.

408119869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 46.

The square root of 408119869 is about 20201.9768587136. The cubic root of 408119869 is about 741.7585816705.

The spelling of 408119869 in words is "four hundred eight million, one hundred nineteen thousand, eight hundred sixty-nine".