400302204217 has 2 divisors, whose sum is σ = 400302204218. Its totient is φ = 400302204216.

The previous prime is 400302204193. The next prime is 400302204259. The reversal of 400302204217 is 712402203004.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 368484206841 + 31817997376 = 607029^2 + 178376^2 .

It is a cyclic number.

It is not a de Polignac number, because 400302204217 - 2¹⁹ = 400301679929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400302204191 and 400302204200.

It is not a weakly prime, because it can be changed into another prime (400302204317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200151102108 + 200151102109.

It is an arithmetic number, because the mean of its divisors is an integer number (200151102109).

Almost surely, 2^400302204217 is an apocalyptic number.

It is an amenable number.

400302204217 is a deficient number, since it is larger than the sum of its proper divisors (1).

400302204217 is an equidigital number, since it uses as much as digits as its factorization.

400302204217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 25.

The spelling of 400302204217 in words is "four hundred billion, three hundred two million, two hundred four thousand, two hundred seventeen".