9771971443 has 8 divisors (see below), whose sum is σ = 10527185088. Its totient is φ = 9017261184.

The previous prime is 9771971411. The next prime is 9771971459. The reversal of 9771971443 is 3441791779.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9771971443 - 2⁵ = 9771971411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9771971243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85030 + ... + 163627.

It is an arithmetic number, because the mean of its divisors is an integer number (1315898136).

Almost surely, 2^9771971443 is an apocalyptic number.

9771971443 is a deficient number, since it is larger than the sum of its proper divisors (755213645).

9771971443 is a wasteful number, since it uses less digits than its factorization.

9771971443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251693.

The product of its digits is 1333584, while the sum is 52.

The square root of 9771971443 is about 98853.2824088305. The cubic root of 9771971443 is about 2137.9328630462.

The spelling of 9771971443 in words is "nine billion, seven hundred seventy-one million, nine hundred seventy-one thousand, four hundred forty-three".