428269771 has 2 divisors, whose sum is σ = 428269772. Its totient is φ = 428269770.

The previous prime is 428269753. The next prime is 428269801. The reversal of 428269771 is 177962824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 428269771 - 2⁵ = 428269739 is a prime.

It is not a weakly prime, because it can be changed into another prime (428269741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214134885 + 214134886.

It is an arithmetic number, because the mean of its divisors is an integer number (214134886).

Almost surely, 2^428269771 is an apocalyptic number.

428269771 is a deficient number, since it is larger than the sum of its proper divisors (1).

428269771 is an equidigital number, since it uses as much as digits as its factorization.

428269771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 46.

The square root of 428269771 is about 20694.6797752466. The cubic root of 428269771 is about 753.7705065344.

The spelling of 428269771 in words is "four hundred twenty-eight million, two hundred sixty-nine thousand, seven hundred seventy-one".