428495971 has 2 divisors, whose sum is σ = 428495972. Its totient is φ = 428495970.

The previous prime is 428495953. The next prime is 428495987. The reversal of 428495971 is 179594824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 428495971 - 2²⁵ = 394941539 is a prime.

It is not a weakly prime, because it can be changed into another prime (428495371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214247985 + 214247986.

It is an arithmetic number, because the mean of its divisors is an integer number (214247986).

Almost surely, 2^428495971 is an apocalyptic number.

428495971 is a deficient number, since it is larger than the sum of its proper divisors (1).

428495971 is an equidigital number, since it uses as much as digits as its factorization.

428495971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 49.

The square root of 428495971 is about 20700.1442265507. The cubic root of 428495971 is about 753.9031899431.

The spelling of 428495971 in words is "four hundred twenty-eight million, four hundred ninety-five thousand, nine hundred seventy-one".