400303433 has 6 divisors (see below), whose sum is σ = 401452254. Its totient is φ = 399157824.

The previous prime is 400303427. The next prime is 400303441. The reversal of 400303433 is 334303004.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 112933129 + 287370304 = 10627^2 + 16952^2 .

It is not a de Polignac number, because 400303433 - 2²⁶ = 333194569 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (400303483) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 166085 + ... + 168477.

It is an arithmetic number, because the mean of its divisors is an integer number (66908709).

Almost surely, 2^400303433 is an apocalyptic number.

It is an amenable number.

400303433 is a deficient number, since it is larger than the sum of its proper divisors (1148821).

400303433 is an frugal number, since it uses more digits than its factorization.

400303433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3211 (or 2802 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 20.

The square root of 400303433 is about 20007.5843869269. The cubic root of 400303433 is about 736.9925620925.

Adding to 400303433 its reverse (334303004), we get a palindrome (734606437).

The spelling of 400303433 in words is "four hundred million, three hundred three thousand, four hundred thirty-three".