428744333 has 2 divisors, whose sum is σ = 428744334. Its totient is φ = 428744332.

The previous prime is 428744321. The next prime is 428744341. The reversal of 428744333 is 333447824.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226592809 + 202151524 = 15053^2 + 14218^2 .

It is a cyclic number.

It is not a de Polignac number, because 428744333 - 2⁴ = 428744317 is a prime.

It is a super-3 number, since 3×428744333³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428744933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214372166 + 214372167.

It is an arithmetic number, because the mean of its divisors is an integer number (214372167).

Almost surely, 2^428744333 is an apocalyptic number.

It is an amenable number.

428744333 is a deficient number, since it is larger than the sum of its proper divisors (1).

428744333 is an equidigital number, since it uses as much as digits as its factorization.

428744333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 38.

The square root of 428744333 is about 20706.1423978490. The cubic root of 428744333 is about 754.0488192703.

The spelling of 428744333 in words is "four hundred twenty-eight million, seven hundred forty-four thousand, three hundred thirty-three".