6442199 has 4 divisors (see below), whose sum is σ = 6448464. Its totient is φ = 6435936.

The previous prime is 6442169. The next prime is 6442223. The reversal of 6442199 is 9912446.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6442199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442109) 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, 1187 + ... + 3780.

It is an arithmetic number, because the mean of its divisors is an integer number (1612116).

Almost surely, 2^6442199 is an apocalyptic number.

6442199 is a deficient number, since it is larger than the sum of its proper divisors (6265).

6442199 is a wasteful number, since it uses less digits than its factorization.

6442199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6264.

The product of its digits is 15552, while the sum is 35.

The square root of 6442199 is about 2538.1487348065. The cubic root of 6442199 is about 186.0707230958.

The spelling of 6442199 in words is "six million, four hundred forty-two thousand, one hundred ninety-nine".