6442477219 has 4 divisors (see below), whose sum is σ = 6449113080. Its totient is φ = 6435841360.

The previous prime is 6442477213. The next prime is 6442477253. The reversal of 6442477219 is 9127742446.

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 6442477219 - 2⁵ = 6442477187 is a prime.

It is a super-2 number, since 2×6442477219² = 83011025434667947922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6442477213) 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, 3316474 + ... + 3318415.

It is an arithmetic number, because the mean of its divisors is an integer number (1612278270).

Almost surely, 2^6442477219 is an apocalyptic number.

6442477219 is a deficient number, since it is larger than the sum of its proper divisors (6635861).

6442477219 is an equidigital number, since it uses as much as digits as its factorization.

6442477219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6635860.

The product of its digits is 677376, while the sum is 46.

The square root of 6442477219 is about 80265.0435681686. The cubic root of 6442477219 is about 1860.7340166695.

The spelling of 6442477219 in words is "six billion, four hundred forty-two million, four hundred seventy-seven thousand, two hundred nineteen".