6401479219 has 4 divisors (see below), whose sum is σ = 6408445840. Its totient is φ = 6394512600.

The previous prime is 6401479193. The next prime is 6401479247. The reversal of 6401479219 is 9129741046.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6401479219 is a prime.

It is a super-2 number, since 2×6401479219² = 81957872382577699922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6401479519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3481932 + ... + 3483769.

It is an arithmetic number, because the mean of its divisors is an integer number (1602111460).

Almost surely, 2^6401479219 is an apocalyptic number.

6401479219 is a deficient number, since it is larger than the sum of its proper divisors (6966621).

6401479219 is an equidigital number, since it uses as much as digits as its factorization.

6401479219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6966620.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 6401479219 is about 80009.2445846103. The cubic root of 6401479219 is about 1856.7785625595.

The spelling of 6401479219 in words is "six billion, four hundred one million, four hundred seventy-nine thousand, two hundred nineteen".