427389 has 8 divisors (see below), whose sum is σ = 575520. Its totient is φ = 282096.

The previous prime is 427381. The next prime is 427403. The reversal of 427389 is 983724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 427389 - 2³ = 427381 is a prime.

It is a super-2 number, since 2×427389² = 365322714642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427381) 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 7 ways as a sum of consecutive naturals, for example, 327 + ... + 980.

It is an arithmetic number, because the mean of its divisors is an integer number (71940).

2⁴²⁷³⁸⁹ is an apocalyptic number.

It is an amenable number.

427389 is a deficient number, since it is larger than the sum of its proper divisors (148131).

427389 is a wasteful number, since it uses less digits than its factorization.

427389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419.

The product of its digits is 12096, while the sum is 33.

The square root of 427389 is about 653.7499521989. The cubic root of 427389 is about 75.3253422141.

The spelling of 427389 in words is "four hundred twenty-seven thousand, three hundred eighty-nine".