428171297 has 2 divisors, whose sum is σ = 428171298. Its totient is φ = 428171296.

The previous prime is 428171267. The next prime is 428171311. The reversal of 428171297 is 792171824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 278255761 + 149915536 = 16681^2 + 12244^2 .

It is a cyclic number.

It is not a de Polignac number, because 428171297 - 2⁸ = 428171041 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (428171267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214085648 + 214085649.

It is an arithmetic number, because the mean of its divisors is an integer number (214085649).

Almost surely, 2^428171297 is an apocalyptic number.

It is an amenable number.

428171297 is a deficient number, since it is larger than the sum of its proper divisors (1).

428171297 is an equidigital number, since it uses as much as digits as its factorization.

428171297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 41.

The square root of 428171297 is about 20692.3004279370. The cubic root of 428171297 is about 753.7127294885.

The spelling of 428171297 in words is "four hundred twenty-eight million, one hundred seventy-one thousand, two hundred ninety-seven".