408313067509 has 2 divisors, whose sum is σ = 408313067510. Its totient is φ = 408313067508.

The previous prime is 408313067483. The next prime is 408313067593. The reversal of 408313067509 is 905760313804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 286522537284 + 121790530225 = 535278^2 + 348985^2 .

It is a cyclic number.

It is not a de Polignac number, because 408313067509 - 2⁷ = 408313067381 is a prime.

It is a super-2 number, since 2×408313067509² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (408313767509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204156533754 + 204156533755.

It is an arithmetic number, because the mean of its divisors is an integer number (204156533755).

Almost surely, 2^408313067509 is an apocalyptic number.

It is an amenable number.

408313067509 is a deficient number, since it is larger than the sum of its proper divisors (1).

408313067509 is an equidigital number, since it uses as much as digits as its factorization.

408313067509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 408313067509 in words is "four hundred eight billion, three hundred thirteen million, sixty-seven thousand, five hundred nine".