400230403 has 2 divisors, whose sum is σ = 400230404. Its totient is φ = 400230402.

The previous prime is 400230373. The next prime is 400230407. The reversal of 400230403 is 304032004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400230403 - 2⁹ = 400229891 is a prime.

It is not a weakly prime, because it can be changed into another prime (400230407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200115201 + 200115202.

It is an arithmetic number, because the mean of its divisors is an integer number (200115202).

Almost surely, 2^400230403 is an apocalyptic number.

400230403 is a deficient number, since it is larger than the sum of its proper divisors (1).

400230403 is an equidigital number, since it uses as much as digits as its factorization.

400230403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 400230403 is about 20005.7592457772. The cubic root of 400230403 is about 736.9477412260.

Adding to 400230403 its reverse (304032004), we get a palindrome (704262407).

The spelling of 400230403 in words is "four hundred million, two hundred thirty thousand, four hundred three".