427393165 has 4 divisors (see below), whose sum is σ = 512871804. Its totient is φ = 341914528.

The previous prime is 427393157. The next prime is 427393171. The reversal of 427393165 is 561393724.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 105226564 + 322166601 = 10258^2 + 17949^2 .

It is a cyclic number.

It is not a de Polignac number, because 427393165 - 2³ = 427393157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42739312 + ... + 42739321.

It is an arithmetic number, because the mean of its divisors is an integer number (128217951).

Almost surely, 2^427393165 is an apocalyptic number.

It is an amenable number.

427393165 is a deficient number, since it is larger than the sum of its proper divisors (85478639).

427393165 is an equidigital number, since it uses as much as digits as its factorization.

427393165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85478638.

The product of its digits is 136080, while the sum is 40.

The square root of 427393165 is about 20673.4894248649. The cubic root of 427393165 is about 753.2558690067.

The spelling of 427393165 in words is "four hundred twenty-seven million, three hundred ninety-three thousand, one hundred sixty-five".