6441404971 has 2 divisors, whose sum is σ = 6441404972. Its totient is φ = 6441404970.

The previous prime is 6441404969. The next prime is 6441405041. The reversal of 6441404971 is 1794041446.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6441404971 - 2¹ = 6441404969 is a prime.

Together with 6441404969, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6441404911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3220702485 + 3220702486.

It is an arithmetic number, because the mean of its divisors is an integer number (3220702486).

Almost surely, 2^6441404971 is an apocalyptic number.

6441404971 is a deficient number, since it is larger than the sum of its proper divisors (1).

6441404971 is an equidigital number, since it uses as much as digits as its factorization.

6441404971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 6441404971 is about 80258.3638694435. The cubic root of 6441404971 is about 1860.6307810683.

The spelling of 6441404971 in words is "six billion, four hundred forty-one million, four hundred four thousand, nine hundred seventy-one".