971948879 has 4 divisors (see below), whose sum is σ = 1060307880. Its totient is φ = 883589880.

The previous prime is 971948863. The next prime is 971948899. The reversal of 971948879 is 978849179.

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 971948879 - 2⁴ = 971948863 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 (971948839) 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, 44179484 + ... + 44179505.

It is an arithmetic number, because the mean of its divisors is an integer number (265076970).

Almost surely, 2^971948879 is an apocalyptic number.

971948879 is a deficient number, since it is larger than the sum of its proper divisors (88359001).

971948879 is a wasteful number, since it uses less digits than its factorization.

971948879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88359000.

The product of its digits is 9144576, while the sum is 62.

The square root of 971948879 is about 31176.0946720400. The cubic root of 971948879 is about 990.5608083328.

The spelling of 971948879 in words is "nine hundred seventy-one million, nine hundred forty-eight thousand, eight hundred seventy-nine".