972448811 has 4 divisors (see below), whose sum is σ = 976809792. Its totient is φ = 968087832.

The previous prime is 972448781. The next prime is 972448831. The reversal of 972448811 is 118844279.

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 972448811 - 2¹⁴ = 972432427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (972448831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2180156 + ... + 2180601.

It is an arithmetic number, because the mean of its divisors is an integer number (244202448).

Almost surely, 2^972448811 is an apocalyptic number.

972448811 is a deficient number, since it is larger than the sum of its proper divisors (4360981).

972448811 is a wasteful number, since it uses less digits than its factorization.

972448811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4360980.

The product of its digits is 129024, while the sum is 44.

The square root of 972448811 is about 31184.1115153214. Note that the first 3 decimals coincide. The cubic root of 972448811 is about 990.7306143020.

The spelling of 972448811 in words is "nine hundred seventy-two million, four hundred forty-eight thousand, eight hundred eleven".