427769 has 4 divisors (see below), whose sum is σ = 441600. Its totient is φ = 413940.

The previous prime is 427751. The next prime is 427781. The reversal of 427769 is 967724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 427769 - 2⁸ = 427513 is a prime.

It is a super-2 number, since 2×427769² = 365972634722, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 427769.

It is not an unprimeable number, because it can be changed into a prime (427789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6869 + ... + 6930.

It is an arithmetic number, because the mean of its divisors is an integer number (110400).

2⁴²⁷⁷⁶⁹ is an apocalyptic number.

It is an amenable number.

427769 is a deficient number, since it is larger than the sum of its proper divisors (13831).

427769 is a wasteful number, since it uses less digits than its factorization.

427769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13830.

The product of its digits is 21168, while the sum is 35.

The square root of 427769 is about 654.0405186225. The cubic root of 427769 is about 75.3476600174.

The spelling of 427769 in words is "four hundred twenty-seven thousand, seven hundred sixty-nine".