401497169 has 2 divisors, whose sum is σ = 401497170. Its totient is φ = 401497168.

The previous prime is 401497111. The next prime is 401497231. The reversal of 401497169 is 961794104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 348382225 + 53114944 = 18665^2 + 7288^2 .

It is a cyclic number.

It is not a de Polignac number, because 401497169 - 2²⁰ = 400448593 is a prime.

It is a super-2 number, since 2×401497169² = 322399953430029122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (401497769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200748584 + 200748585.

It is an arithmetic number, because the mean of its divisors is an integer number (200748585).

Almost surely, 2^401497169 is an apocalyptic number.

It is an amenable number.

401497169 is a deficient number, since it is larger than the sum of its proper divisors (1).

401497169 is an equidigital number, since it uses as much as digits as its factorization.

401497169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 401497169 is about 20037.3942667204. The cubic root of 401497169 is about 737.7244248145.

The spelling of 401497169 in words is "four hundred one million, four hundred ninety-seven thousand, one hundred sixty-nine".