420444433 has 2 divisors, whose sum is σ = 420444434. Its totient is φ = 420444432.

The previous prime is 420444419. The next prime is 420444457. The reversal of 420444433 is 334444024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222845184 + 197599249 = 14928^2 + 14057^2 .

It is a cyclic number.

It is not a de Polignac number, because 420444433 - 2²⁵ = 386890001 is a prime.

It is not a weakly prime, because it can be changed into another prime (420444403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210222216 + 210222217.

It is an arithmetic number, because the mean of its divisors is an integer number (210222217).

Almost surely, 2^420444433 is an apocalyptic number.

It is an amenable number.

420444433 is a deficient number, since it is larger than the sum of its proper divisors (1).

420444433 is an equidigital number, since it uses as much as digits as its factorization.

420444433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 28.

The square root of 420444433 is about 20504.7417199047. The cubic root of 420444433 is about 749.1512965581.

Adding to 420444433 its reverse (334444024), we get a palindrome (754888457).

The spelling of 420444433 in words is "four hundred twenty million, four hundred forty-four thousand, four hundred thirty-three".