427869 has 32 divisors (see below), whose sum is σ = 725760. Its totient is φ = 247104.

The previous prime is 427859. The next prime is 427877. The reversal of 427869 is 968724.

It is not a de Polignac number, because 427869 - 2¹⁶ = 362333 is a prime.

It is a super-2 number, since 2×427869² = 366143762322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427849) 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 31 ways as a sum of consecutive naturals, for example, 8047 + ... + 8099.

It is an arithmetic number, because the mean of its divisors is an integer number (22680).

2⁴²⁷⁸⁶⁹ is an apocalyptic number.

427869 is the 414-th heptagonal number.

It is an amenable number.

427869 is a deficient number, since it is larger than the sum of its proper divisors (297891).

427869 is a wasteful number, since it uses less digits than its factorization.

427869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98 (or 92 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 427869 is about 654.1169620183. The cubic root of 427869 is about 75.3535309267.

It can be divided in two parts, 427 and 869, that added together give a 4-th power (1296 = 6⁴).

The spelling of 427869 in words is "four hundred twenty-seven thousand, eight hundred sixty-nine".