401436169 has 2 divisors, whose sum is σ = 401436170. Its totient is φ = 401436168.

The previous prime is 401436163. The next prime is 401436179. The reversal of 401436169 is 961634104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 301196025 + 100240144 = 17355^2 + 10012^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401436169 is a prime.

It is a super-2 number, since 2×401436169² = 322301995562793122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401436163) 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, 200718084 + 200718085.

It is an arithmetic number, because the mean of its divisors is an integer number (200718085).

Almost surely, 2^401436169 is an apocalyptic number.

It is an amenable number.

401436169 is a deficient number, since it is larger than the sum of its proper divisors (1).

401436169 is an equidigital number, since it uses as much as digits as its factorization.

401436169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 401436169 is about 20035.8720548919. The cubic root of 401436169 is about 737.6870617706.

The spelling of 401436169 in words is "four hundred one million, four hundred thirty-six thousand, one hundred sixty-nine".