971130839 has 4 divisors (see below), whose sum is σ = 1109863824. Its totient is φ = 832397856.

The previous prime is 971130833. The next prime is 971130847. The reversal of 971130839 is 938031179.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-971130839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 971130796 and 971130805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971130833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69366482 + ... + 69366495.

It is an arithmetic number, because the mean of its divisors is an integer number (277465956).

Almost surely, 2^971130839 is an apocalyptic number.

971130839 is a deficient number, since it is larger than the sum of its proper divisors (138732985).

971130839 is a wasteful number, since it uses less digits than its factorization.

971130839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138732984.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 971130839 is about 31162.9722427114. The cubic root of 971130839 is about 990.2828287592.

The spelling of 971130839 in words is "nine hundred seventy-one million, one hundred thirty thousand, eight hundred thirty-nine".