400223533 has 2 divisors, whose sum is σ = 400223534. Its totient is φ = 400223532.

The previous prime is 400223497. The next prime is 400223539. The reversal of 400223533 is 335322004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 379548324 + 20675209 = 19482^2 + 4547^2 .

It is a cyclic number.

It is not a de Polignac number, because 400223533 - 2¹⁷ = 400092461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400223539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200111766 + 200111767.

It is an arithmetic number, because the mean of its divisors is an integer number (200111767).

Almost surely, 2^400223533 is an apocalyptic number.

It is an amenable number.

400223533 is a deficient number, since it is larger than the sum of its proper divisors (1).

400223533 is an equidigital number, since it uses as much as digits as its factorization.

400223533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 22.

The square root of 400223533 is about 20005.5875444837. The cubic root of 400223533 is about 736.9435246048.

Adding to 400223533 its reverse (335322004), we get a palindrome (735545537).

The spelling of 400223533 in words is "four hundred million, two hundred twenty-three thousand, five hundred thirty-three".