428379 has 8 divisors (see below), whose sum is σ = 652800. Its totient is φ = 244776.

The previous prime is 428369. The next prime is 428401. The reversal of 428379 is 973824.

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

It is not a de Polignac number, because 428379 - 2⁷ = 428251 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 7 ways as a sum of consecutive naturals, for example, 10179 + ... + 10220.

It is an arithmetic number, because the mean of its divisors is an integer number (81600).

2⁴²⁸³⁷⁹ is an apocalyptic number.

428379 is a deficient number, since it is larger than the sum of its proper divisors (224421).

428379 is a wasteful number, since it uses less digits than its factorization.

428379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20409.

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

The square root of 428379 is about 654.5066844578. The cubic root of 428379 is about 75.3834583436.

The spelling of 428379 in words is "four hundred twenty-eight thousand, three hundred seventy-nine".