427234486669 has 4 divisors (see below), whose sum is σ = 427235908444. Its totient is φ = 427233064896.

The previous prime is 427234486639. The next prime is 427234486687. The reversal of 427234486669 is 966684432724.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 324174225769 + 103060260900 = 569363^2 + 321030^2 .

It is a cyclic number.

It is not a de Polignac number, because 427234486669 - 2²⁵ = 427200932237 is a prime.

It is a super-2 number, since 2×427234486669² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427234486639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63822 + ... + 926575.

It is an arithmetic number, because the mean of its divisors is an integer number (106808977111).

Almost surely, 2^427234486669 is an apocalyptic number.

It is an amenable number.

427234486669 is a deficient number, since it is larger than the sum of its proper divisors (1421775).

427234486669 is an equidigital number, since it uses as much as digits as its factorization.

427234486669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421774.

The product of its digits is 83607552, while the sum is 61.

The spelling of 427234486669 in words is "four hundred twenty-seven billion, two hundred thirty-four million, four hundred eighty-six thousand, six hundred sixty-nine".