400325441 has 2 divisors, whose sum is σ = 400325442. Its totient is φ = 400325440.

The previous prime is 400325423. The next prime is 400325467. The reversal of 400325441 is 144523004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 361000000 + 39325441 = 19000^2 + 6271^2 .

It is a cyclic number.

It is not a de Polignac number, because 400325441 - 2¹⁴ = 400309057 is a prime.

It is not a weakly prime, because it can be changed into another prime (400325411) 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, 200162720 + 200162721.

It is an arithmetic number, because the mean of its divisors is an integer number (200162721).

Almost surely, 2^400325441 is an apocalyptic number.

It is an amenable number.

400325441 is a deficient number, since it is larger than the sum of its proper divisors (1).

400325441 is an equidigital number, since it uses as much as digits as its factorization.

400325441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 400325441 is about 20008.1343708003. The cubic root of 400325441 is about 737.0060680430.

Adding to 400325441 its reverse (144523004), we get a palindrome (544848445).

The spelling of 400325441 in words is "four hundred million, three hundred twenty-five thousand, four hundred forty-one".