400410312217 has 2 divisors, whose sum is σ = 400410312218. Its totient is φ = 400410312216.

The previous prime is 400410312167. The next prime is 400410312287. The reversal of 400410312217 is 712213014004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 323824731136 + 76585581081 = 569056^2 + 276741^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400410312217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400410312191 and 400410312200.

It is not a weakly prime, because it can be changed into another prime (400410312287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200205156108 + 200205156109.

It is an arithmetic number, because the mean of its divisors is an integer number (200205156109).

Almost surely, 2^400410312217 is an apocalyptic number.

It is an amenable number.

400410312217 is a deficient number, since it is larger than the sum of its proper divisors (1).

400410312217 is an equidigital number, since it uses as much as digits as its factorization.

400410312217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 25.

The spelling of 400410312217 in words is "four hundred billion, four hundred ten million, three hundred twelve thousand, two hundred seventeen".