428349 has 16 divisors (see below), whose sum is σ = 623808. Its totient is φ = 260352.

The previous prime is 428339. The next prime is 428353. The reversal of 428349 is 943824.

It is a happy number.

It is not a de Polignac number, because 428349 - 2⁷ = 428221 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1774 + ... + 2000.

It is an arithmetic number, because the mean of its divisors is an integer number (38988).

2⁴²⁸³⁴⁹ is an apocalyptic number.

It is an amenable number.

428349 is a deficient number, since it is larger than the sum of its proper divisors (195459).

428349 is a wasteful number, since it uses less digits than its factorization.

428349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284.

The product of its digits is 6912, while the sum is 30.

The square root of 428349 is about 654.4837660324. The cubic root of 428349 is about 75.3816985650.

It can be divided in two parts, 428 and 349, that added together give a palindrome (777).

The spelling of 428349 in words is "four hundred twenty-eight thousand, three hundred forty-nine".