401241569 has 2 divisors, whose sum is σ = 401241570. Its totient is φ = 401241568.

The previous prime is 401241559. The next prime is 401241629. The reversal of 401241569 is 965142104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 338118544 + 63123025 = 18388^2 + 7945^2 .

It is a cyclic number.

It is not a de Polignac number, because 401241569 - 2²⁰ = 400192993 is a prime.

It is a super-4 number, since 4×401241569⁴ (a number of 36 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (401241559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200620784 + 200620785.

It is an arithmetic number, because the mean of its divisors is an integer number (200620785).

Almost surely, 2^401241569 is an apocalyptic number.

It is an amenable number.

401241569 is a deficient number, since it is larger than the sum of its proper divisors (1).

401241569 is an equidigital number, since it uses as much as digits as its factorization.

401241569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 401241569 is about 20031.0151764707. The cubic root of 401241569 is about 737.5678422317.

The spelling of 401241569 in words is "four hundred one million, two hundred forty-one thousand, five hundred sixty-nine".