6428459 has 4 divisors (see below), whose sum is σ = 6650160. Its totient is φ = 6206760.

The previous prime is 6428447. The next prime is 6428473. The reversal of 6428459 is 9548246.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9548246 = 2 ⋅4774123.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6428459 is a prime.

It is a super-2 number, since 2×6428459² = 82650170229362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6428419) 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 3 ways as a sum of consecutive naturals, for example, 110807 + ... + 110864.

It is an arithmetic number, because the mean of its divisors is an integer number (1662540).

Almost surely, 2^6428459 is an apocalyptic number.

6428459 is a deficient number, since it is larger than the sum of its proper divisors (221701).

6428459 is a wasteful number, since it uses less digits than its factorization.

6428459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221700.

The product of its digits is 69120, while the sum is 38.

The square root of 6428459 is about 2535.4405928753. The cubic root of 6428459 is about 185.9383443080.

The spelling of 6428459 in words is "six million, four hundred twenty-eight thousand, four hundred fifty-nine".