628443469 has 2 divisors, whose sum is σ = 628443470. Its totient is φ = 628443468.

The previous prime is 628443443. The next prime is 628443493. The reversal of 628443469 is 964344826.

628443469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 607622500 + 20820969 = 24650^2 + 4563^2 .

It is a cyclic number.

It is not a de Polignac number, because 628443469 - 2¹¹ = 628441421 is a prime.

It is a super-2 number, since 2×628443469² = 789882387457507922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628443269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314221734 + 314221735.

It is an arithmetic number, because the mean of its divisors is an integer number (314221735).

Almost surely, 2^628443469 is an apocalyptic number.

It is an amenable number.

628443469 is a deficient number, since it is larger than the sum of its proper divisors (1).

628443469 is an equidigital number, since it uses as much as digits as its factorization.

628443469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 995328, while the sum is 46.

The square root of 628443469 is about 25068.7747805911. The cubic root of 628443469 is about 856.5552982112. Note that the first 3 decimals are identical.

The spelling of 628443469 in words is "six hundred twenty-eight million, four hundred forty-three thousand, four hundred sixty-nine".