6402219 has 4 divisors (see below), whose sum is σ = 8536296. Its totient is φ = 4268144.

The previous prime is 6402203. The next prime is 6402247. The reversal of 6402219 is 9122046.

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

It is a cyclic number.

It is not a de Polignac number, because 6402219 - 2⁴ = 6402203 is a prime.

It is a super-2 number, since 2×6402219² = 81976816247922, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (6402269) 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, 1067034 + ... + 1067039.

It is an arithmetic number, because the mean of its divisors is an integer number (2134074).

Almost surely, 2^6402219 is an apocalyptic number.

6402219 is a deficient number, since it is larger than the sum of its proper divisors (2134077).

6402219 is a wasteful number, since it uses less digits than its factorization.

6402219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134076.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 6402219 is about 2530.2606585093. The cubic root of 6402219 is about 185.6850085434.

The spelling of 6402219 in words is "six million, four hundred two thousand, two hundred nineteen".