427375609 has 2 divisors, whose sum is σ = 427375610. Its totient is φ = 427375608.

The previous prime is 427375603. The next prime is 427375681. The reversal of 427375609 is 906573724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 340513209 + 86862400 = 18453^2 + 9320^2 .

It is a cyclic number.

It is not a de Polignac number, because 427375609 - 2¹³ = 427367417 is a prime.

It is a super-2 number, since 2×427375609² = 365299822336241762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (427375603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213687804 + 213687805.

It is an arithmetic number, because the mean of its divisors is an integer number (213687805).

Almost surely, 2^427375609 is an apocalyptic number.

It is an amenable number.

427375609 is a deficient number, since it is larger than the sum of its proper divisors (1).

427375609 is an equidigital number, since it uses as much as digits as its factorization.

427375609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 43.

The square root of 427375609 is about 20673.0648187442. The cubic root of 427375609 is about 753.2455550521.

The spelling of 427375609 in words is "four hundred twenty-seven million, three hundred seventy-five thousand, six hundred nine".