427047169 has 2 divisors, whose sum is σ = 427047170. Its totient is φ = 427047168.

The previous prime is 427047163. The next prime is 427047197. The reversal of 427047169 is 961740724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 344473600 + 82573569 = 18560^2 + 9087^2 .

It is a cyclic number.

It is not a de Polignac number, because 427047169 - 2⁹ = 427046657 is a prime.

It is a super-2 number, since 2×427047169² = 364738569101829122, which contains 22 as substring.

It is equal to p_22699471 and since 427047169 and 22699471 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (427047163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213523584 + 213523585.

It is an arithmetic number, because the mean of its divisors is an integer number (213523585).

Almost surely, 2^427047169 is an apocalyptic number.

It is an amenable number.

427047169 is a deficient number, since it is larger than the sum of its proper divisors (1).

427047169 is an equidigital number, since it uses as much as digits as its factorization.

427047169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 427047169 is about 20665.1196222040. The cubic root of 427047169 is about 753.0525481148.

The spelling of 427047169 in words is "four hundred twenty-seven million, forty-seven thousand, one hundred sixty-nine".