6428379 has 4 divisors (see below), whose sum is σ = 8571176. Its totient is φ = 4285584.

The previous prime is 6428369. The next prime is 6428393. The reversal of 6428379 is 9738246.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6428379 - 2¹⁵ = 6395611 is a prime.

It is a d-powerful number, because it can be written as 6³ + 4⁴ + 2¹⁷ + 8³ + 3¹² + 7⁸ + 9² .

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6428369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1071394 + ... + 1071399.

It is an arithmetic number, because the mean of its divisors is an integer number (2142794).

Almost surely, 2^6428379 is an apocalyptic number.

6428379 is a deficient number, since it is larger than the sum of its proper divisors (2142797).

6428379 is a wasteful number, since it uses less digits than its factorization.

6428379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2142796.

The product of its digits is 72576, while the sum is 39.

The square root of 6428379 is about 2535.4248164755. The cubic root of 6428379 is about 185.9375729915.

The spelling of 6428379 in words is "six million, four hundred twenty-eight thousand, three hundred seventy-nine".