428114191 has 2 divisors, whose sum is σ = 428114192. Its totient is φ = 428114190.

The previous prime is 428114131. The next prime is 428114209. The reversal of 428114191 is 191411824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 428114191 - 2¹³ = 428105999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428114131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214057095 + 214057096.

It is an arithmetic number, because the mean of its divisors is an integer number (214057096).

Almost surely, 2^428114191 is an apocalyptic number.

428114191 is a deficient number, since it is larger than the sum of its proper divisors (1).

428114191 is an equidigital number, since it uses as much as digits as its factorization.

428114191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 31.

The square root of 428114191 is about 20690.9204966816. The cubic root of 428114191 is about 753.6792199772.

The spelling of 428114191 in words is "four hundred twenty-eight million, one hundred fourteen thousand, one hundred ninety-one".