400481717 has 2 divisors, whose sum is σ = 400481718. Its totient is φ = 400481716.

The previous prime is 400481707. The next prime is 400481761. The reversal of 400481717 is 717184004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208686916 + 191794801 = 14446^2 + 13849^2 .

It is a cyclic number.

It is not a de Polignac number, because 400481717 - 2¹² = 400477621 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400481707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200240858 + 200240859.

It is an arithmetic number, because the mean of its divisors is an integer number (200240859).

Almost surely, 2^400481717 is an apocalyptic number.

It is an amenable number.

400481717 is a deficient number, since it is larger than the sum of its proper divisors (1).

400481717 is an equidigital number, since it uses as much as digits as its factorization.

400481717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 400481717 is about 20012.0393013806. The cubic root of 400481717 is about 737.1019578404.

The spelling of 400481717 in words is "four hundred million, four hundred eighty-one thousand, seven hundred seventeen".