428282669 has 2 divisors, whose sum is σ = 428282670. Its totient is φ = 428282668.

The previous prime is 428282651. The next prime is 428282677. The reversal of 428282669 is 966282824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 414122500 + 14160169 = 20350^2 + 3763^2 .

It is a cyclic number.

It is not a de Polignac number, because 428282669 - 2²⁸ = 159847213 is a prime.

It is a super-2 number, since 2×428282669² = 366852089131527122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428282069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214141334 + 214141335.

It is an arithmetic number, because the mean of its divisors is an integer number (214141335).

Almost surely, 2^428282669 is an apocalyptic number.

It is an amenable number.

428282669 is a deficient number, since it is larger than the sum of its proper divisors (1).

428282669 is an equidigital number, since it uses as much as digits as its factorization.

428282669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 663552, while the sum is 47.

The square root of 428282669 is about 20694.9913988868. The cubic root of 428282669 is about 753.7780734428.

The spelling of 428282669 in words is "four hundred twenty-eight million, two hundred eighty-two thousand, six hundred sixty-nine".