6442319 has 4 divisors (see below), whose sum is σ = 6937896. Its totient is φ = 5946744.

The previous prime is 6442307. The next prime is 6442339. The reversal of 6442319 is 9132446.

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 6442319 - 2⁸ = 6442063 is a prime.

It is a super-2 number, since 2×6442319² = 83006948195522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6442291 and 6442300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442339) 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, 247769 + ... + 247794.

It is an arithmetic number, because the mean of its divisors is an integer number (1734474).

Almost surely, 2^6442319 is an apocalyptic number.

6442319 is a deficient number, since it is larger than the sum of its proper divisors (495577).

6442319 is a wasteful number, since it uses less digits than its factorization.

6442319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495576.

The product of its digits is 5184, while the sum is 29.

The square root of 6442319 is about 2538.1723739731. The cubic root of 6442319 is about 186.0718784129.

The spelling of 6442319 in words is "six million, four hundred forty-two thousand, three hundred nineteen".