428659457 has 2 divisors, whose sum is σ = 428659458. Its totient is φ = 428659456.

The previous prime is 428659423. The next prime is 428659477. The reversal of 428659457 is 754956824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 328479376 + 100180081 = 18124^2 + 10009^2 .

It is a cyclic number.

It is not a de Polignac number, because 428659457 - 2⁸ = 428659201 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (428659477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214329728 + 214329729.

It is an arithmetic number, because the mean of its divisors is an integer number (214329729).

Almost surely, 2^428659457 is an apocalyptic number.

It is an amenable number.

428659457 is a deficient number, since it is larger than the sum of its proper divisors (1).

428659457 is an equidigital number, since it uses as much as digits as its factorization.

428659457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2419200, while the sum is 50.

The square root of 428659457 is about 20704.0927596454. The cubic root of 428659457 is about 753.9990577797. Note that the first 3 decimals are identical.

The spelling of 428659457 in words is "four hundred twenty-eight million, six hundred fifty-nine thousand, four hundred fifty-seven".