428298197 has 2 divisors, whose sum is σ = 428298198. Its totient is φ = 428298196.

The previous prime is 428298179. The next prime is 428298217. The reversal of 428298197 is 791892824.

Together with previous prime (428298179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 416731396 + 11566801 = 20414^2 + 3401^2 .

It is a cyclic number.

It is not a de Polignac number, because 428298197 - 2⁸ = 428297941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428298107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214149098 + 214149099.

It is an arithmetic number, because the mean of its divisors is an integer number (214149099).

Almost surely, 2^428298197 is an apocalyptic number.

It is an amenable number.

428298197 is a deficient number, since it is larger than the sum of its proper divisors (1).

428298197 is an equidigital number, since it uses as much as digits as its factorization.

428298197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 50.

The square root of 428298197 is about 20695.3665587252. The cubic root of 428298197 is about 753.7871830997.

The spelling of 428298197 in words is "four hundred twenty-eight million, two hundred ninety-eight thousand, one hundred ninety-seven".