427047197 has 2 divisors, whose sum is σ = 427047198. Its totient is φ = 427047196.

The previous prime is 427047169. The next prime is 427047239. The reversal of 427047197 is 791740724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 332296441 + 94750756 = 18229^2 + 9734^2 .

It is a cyclic number.

It is not a de Polignac number, because 427047197 - 2⁸ = 427046941 is a prime.

It is a Chen prime.

It is equal to p_22699472 and since 427047197 and 22699472 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427047107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213523598 + 213523599.

It is an arithmetic number, because the mean of its divisors is an integer number (213523599).

Almost surely, 2^427047197 is an apocalyptic number.

It is an amenable number.

427047197 is a deficient number, since it is larger than the sum of its proper divisors (1).

427047197 is an equidigital number, since it uses as much as digits as its factorization.

427047197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98784, while the sum is 41.

The square root of 427047197 is about 20665.1202996740. The cubic root of 427047197 is about 753.0525645731.

The spelling of 427047197 in words is "four hundred twenty-seven million, forty-seven thousand, one hundred ninety-seven".