433421 has 2 divisors, whose sum is σ = 433422. Its totient is φ = 433420.

The previous prime is 433399. The next prime is 433429. The reversal of 433421 is 124334.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220900 + 212521 = 470^2 + 461^2 .

It is a cyclic number.

It is not a de Polignac number, because 433421 - 2⁶ = 433357 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 433421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (433429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216710 + 216711.

It is an arithmetic number, because the mean of its divisors is an integer number (216711).

2⁴³³⁴²¹ is an apocalyptic number.

It is an amenable number.

433421 is a deficient number, since it is larger than the sum of its proper divisors (1).

433421 is an equidigital number, since it uses as much as digits as its factorization.

433421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 17.

The square root of 433421 is about 658.3471728503. The cubic root of 433421 is about 75.6780587513.

Adding to 433421 its reverse (124334), we get a palindrome (557755).

The spelling of 433421 in words is "four hundred thirty-three thousand, four hundred twenty-one".