440202401 has 2 divisors, whose sum is σ = 440202402. Its totient is φ = 440202400.

The previous prime is 440202391. The next prime is 440202407. The reversal of 440202401 is 104202044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 409010176 + 31192225 = 20224^2 + 5585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440202401 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 440202401.

It is not a weakly prime, because it can be changed into another prime (440202407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220101200 + 220101201.

It is an arithmetic number, because the mean of its divisors is an integer number (220101201).

Almost surely, 2^440202401 is an apocalyptic number.

It is an amenable number.

440202401 is a deficient number, since it is larger than the sum of its proper divisors (1).

440202401 is an equidigital number, since it uses as much as digits as its factorization.

440202401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 440202401 is about 20981.0009532434. Note that the first 3 decimals coincide. The cubic root of 440202401 is about 760.7070987260.

Adding to 440202401 its reverse (104202044), we get a palindrome (544404445).

The spelling of 440202401 in words is "four hundred forty million, two hundred two thousand, four hundred one".