400222253 has 2 divisors, whose sum is σ = 400222254. Its totient is φ = 400222252.

The previous prime is 400222247. The next prime is 400222271. The reversal of 400222253 is 352222004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 339038569 + 61183684 = 18413^2 + 7822^2 .

It is a cyclic number.

It is not a de Polignac number, because 400222253 - 2⁶ = 400222189 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400222153) 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, 200111126 + 200111127.

It is an arithmetic number, because the mean of its divisors is an integer number (200111127).

Almost surely, 2^400222253 is an apocalyptic number.

It is an amenable number.

400222253 is a deficient number, since it is larger than the sum of its proper divisors (1).

400222253 is an equidigital number, since it uses as much as digits as its factorization.

400222253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 400222253 is about 20005.5555533957. Note that the first 5 decimals coincide. The cubic root of 400222253 is about 736.9427389699.

Adding to 400222253 its reverse (352222004), we get a palindrome (752444257).

The spelling of 400222253 in words is "four hundred million, two hundred twenty-two thousand, two hundred fifty-three".