427660169 has 2 divisors, whose sum is σ = 427660170. Its totient is φ = 427660168.

The previous prime is 427660133. The next prime is 427660201. The reversal of 427660169 is 961066724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 424854544 + 2805625 = 20612^2 + 1675^2 .

It is a cyclic number.

It is not a de Polignac number, because 427660169 - 2²⁰ = 426611593 is a prime.

It is a super-2 number, since 2×427660169² = 365786440298217122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (427600169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213830084 + 213830085.

It is an arithmetic number, because the mean of its divisors is an integer number (213830085).

Almost surely, 2^427660169 is an apocalyptic number.

It is an amenable number.

427660169 is a deficient number, since it is larger than the sum of its proper divisors (1).

427660169 is an equidigital number, since it uses as much as digits as its factorization.

427660169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 427660169 is about 20679.9460589238. The cubic root of 427660169 is about 753.4126960837.

The spelling of 427660169 in words is "four hundred twenty-seven million, six hundred sixty thousand, one hundred sixty-nine".