400234433 has 2 divisors, whose sum is σ = 400234434. Its totient is φ = 400234432.

The previous prime is 400234421. The next prime is 400234493. The reversal of 400234433 is 334432004.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 302481664 + 97752769 = 17392^2 + 9887^2 .

It is a cyclic number.

It is not a de Polignac number, because 400234433 - 2²² = 396040129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400234399 and 400234408.

It is not a weakly prime, because it can be changed into another prime (400234493) 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, 200117216 + 200117217.

It is an arithmetic number, because the mean of its divisors is an integer number (200117217).

Almost surely, 2^400234433 is an apocalyptic number.

It is an amenable number.

400234433 is a deficient number, since it is larger than the sum of its proper divisors (1).

400234433 is an equidigital number, since it uses as much as digits as its factorization.

400234433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 400234433 is about 20005.8599665198. The cubic root of 400234433 is about 736.9502147091.

Adding to 400234433 its reverse (334432004), we get a palindrome (734666437).

The spelling of 400234433 in words is "four hundred million, two hundred thirty-four thousand, four hundred thirty-three".