428968271 has 2 divisors, whose sum is σ = 428968272. Its totient is φ = 428968270.

The previous prime is 428968249. The next prime is 428968283. The reversal of 428968271 is 172869824.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 428968271 - 2⁶ = 428968207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428968171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214484135 + 214484136.

It is an arithmetic number, because the mean of its divisors is an integer number (214484136).

Almost surely, 2^428968271 is an apocalyptic number.

428968271 is a deficient number, since it is larger than the sum of its proper divisors (1).

428968271 is an equidigital number, since it uses as much as digits as its factorization.

428968271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 47.

The square root of 428968271 is about 20711.5492177674. The cubic root of 428968271 is about 754.1800791540.

The spelling of 428968271 in words is "four hundred twenty-eight million, nine hundred sixty-eight thousand, two hundred seventy-one".