408306234997 has 2 divisors, whose sum is σ = 408306234998. Its totient is φ = 408306234996.

The previous prime is 408306234943. The next prime is 408306235049. The reversal of 408306234997 is 799432603804.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 304719456196 + 103586778801 = 552014^2 + 321849^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-408306234997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (408306234907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204153117498 + 204153117499.

It is an arithmetic number, because the mean of its divisors is an integer number (204153117499).

Almost surely, 2^408306234997 is an apocalyptic number.

It is an amenable number.

408306234997 is a deficient number, since it is larger than the sum of its proper divisors (1).

408306234997 is an equidigital number, since it uses as much as digits as its factorization.

408306234997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7838208, while the sum is 55.

The spelling of 408306234997 in words is "four hundred eight billion, three hundred six million, two hundred thirty-four thousand, nine hundred ninety-seven".