400244241 has 16 divisors (see below), whose sum is σ = 543143808. Its totient is φ = 262099200.

The previous prime is 400244239. The next prime is 400244261. The reversal of 400244241 is 142442004.

It is not a de Polignac number, because 400244241 - 2¹ = 400244239 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (400244231) 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 in 15 ways as a sum of consecutive naturals, for example, 248260 + ... + 249866.

It is an arithmetic number, because the mean of its divisors is an integer number (33946488).

Almost surely, 2^400244241 is an apocalyptic number.

It is an amenable number.

400244241 is a deficient number, since it is larger than the sum of its proper divisors (142899567).

400244241 is a wasteful number, since it uses less digits than its factorization.

400244241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3032.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 400244241 is about 20006.1050931959. The cubic root of 400244241 is about 736.9562344716.

Adding to 400244241 its reverse (142442004), we get a palindrome (542686245).

The spelling of 400244241 in words is "four hundred million, two hundred forty-four thousand, two hundred forty-one".