401185441 has 2 divisors, whose sum is σ = 401185442. Its totient is φ = 401185440.

The previous prime is 401185439. The next prime is 401185453. The reversal of 401185441 is 144581104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 350775441 + 50410000 = 18729^2 + 7100^2 .

It is a cyclic number.

It is not a de Polignac number, because 401185441 - 2¹ = 401185439 is a prime.

Together with 401185439, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (401185241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200592720 + 200592721.

It is an arithmetic number, because the mean of its divisors is an integer number (200592721).

Almost surely, 2^401185441 is an apocalyptic number.

It is an amenable number.

401185441 is a deficient number, since it is larger than the sum of its proper divisors (1).

401185441 is an equidigital number, since it uses as much as digits as its factorization.

401185441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 401185441 is about 20029.6141001268. The cubic root of 401185441 is about 737.5334488707.

The spelling of 401185441 in words is "four hundred one million, one hundred eighty-five thousand, four hundred forty-one".