971839 has 8 divisors (see below), whose sum is σ = 1122768. Its totient is φ = 831360.

The previous prime is 971833. The next prime is 971851. The reversal of 971839 is 938179.

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 971839 - 2¹¹ = 969791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 971798 and 971807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2412 + ... + 2785.

It is an arithmetic number, because the mean of its divisors is an integer number (140346).

2⁹⁷¹⁸³⁹ is an apocalyptic number.

971839 is a deficient number, since it is larger than the sum of its proper divisors (150929).

971839 is a wasteful number, since it uses less digits than its factorization.

971839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5225.

The product of its digits is 13608, while the sum is 37.

The square root of 971839 is about 985.8189488948. The cubic root of 971839 is about 99.0523479232.

It can be divided in two parts, 97 and 1839, that added together give a square (1936 = 44²).

The spelling of 971839 in words is "nine hundred seventy-one thousand, eight hundred thirty-nine".