401213441 has 2 divisors, whose sum is σ = 401213442. Its totient is φ = 401213440.

The previous prime is 401213431. The next prime is 401213467. The reversal of 401213441 is 144312104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 372644416 + 28569025 = 19304^2 + 5345^2 .

It is a cyclic number.

It is not a de Polignac number, because 401213441 - 2¹⁸ = 400951297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (401213401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200606720 + 200606721.

It is an arithmetic number, because the mean of its divisors is an integer number (200606721).

Almost surely, 2^401213441 is an apocalyptic number.

It is an amenable number.

401213441 is a deficient number, since it is larger than the sum of its proper divisors (1).

401213441 is an equidigital number, since it uses as much as digits as its factorization.

401213441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 401213441 is about 20030.3130529705. The cubic root of 401213441 is about 737.5506067351.

Adding to 401213441 its reverse (144312104), we get a palindrome (545525545).

The spelling of 401213441 in words is "four hundred one million, two hundred thirteen thousand, four hundred forty-one".