4391171447 has 6 divisors (see below), whose sum is σ = 4754937312. Its totient is φ = 4053388872.

The previous prime is 4391171443. The next prime is 4391171461. The reversal of 4391171447 is 7441711934.

It is a happy number.

It is not a de Polignac number, because 4391171447 - 2² = 4391171443 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 (4391171443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12991463 + ... + 12991800.

It is an arithmetic number, because the mean of its divisors is an integer number (792489552).

Almost surely, 2^4391171447 is an apocalyptic number.

4391171447 is a deficient number, since it is larger than the sum of its proper divisors (363765865).

4391171447 is a wasteful number, since it uses less digits than its factorization.

4391171447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25983289 (or 25983276 counting only the distinct ones).

The product of its digits is 84672, while the sum is 41.

The square root of 4391171447 is about 66265.9146696097. The cubic root of 4391171447 is about 1637.5458344454.

The spelling of 4391171447 in words is "four billion, three hundred ninety-one million, one hundred seventy-one thousand, four hundred forty-seven".