409208452931 has 2 divisors, whose sum is σ = 409208452932. Its totient is φ = 409208452930.

The previous prime is 409208452841. The next prime is 409208452951. The reversal of 409208452931 is 139254802904.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 409208452931 - 2³⁰ = 408134711107 is a prime.

It is a super-2 number, since 2×409208452931² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (409208452951) 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, 204604226465 + 204604226466.

It is an arithmetic number, because the mean of its divisors is an integer number (204604226466).

Almost surely, 2^409208452931 is an apocalyptic number.

409208452931 is a deficient number, since it is larger than the sum of its proper divisors (1).

409208452931 is an equidigital number, since it uses as much as digits as its factorization.

409208452931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 409208452931 in words is "four hundred nine billion, two hundred eight million, four hundred fifty-two thousand, nine hundred thirty-one".