433221401 has 4 divisors (see below), whose sum is σ = 448160100. Its totient is φ = 418282704.

The previous prime is 433221391. The next prime is 433221403. The reversal of 433221401 is 104122334.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 90231001 + 342990400 = 9499^2 + 18520^2 .

It is a cyclic number.

It is not a de Polignac number, because 433221401 - 2¹⁸ = 432959257 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 (433221403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7469306 + ... + 7469363.

It is an arithmetic number, because the mean of its divisors is an integer number (112040025).

Almost surely, 2^433221401 is an apocalyptic number.

It is an amenable number.

433221401 is a deficient number, since it is larger than the sum of its proper divisors (14938699).

433221401 is a wasteful number, since it uses less digits than its factorization.

433221401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14938698.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 433221401 is about 20813.9712933404. The cubic root of 433221401 is about 756.6643988323.

Adding to 433221401 its reverse (104122334), we get a palindrome (537343735).

The spelling of 433221401 in words is "four hundred thirty-three million, two hundred twenty-one thousand, four hundred one".