974839 has 4 divisors (see below), whose sum is σ = 1001224. Its totient is φ = 948456.

The previous prime is 974837. The next prime is 974849. The reversal of 974839 is 938479.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 938479 = 293 ⋅3203.

It is a cyclic number.

It is not a de Polignac number, because 974839 - 2¹ = 974837 is a prime.

It is a super-2 number, since 2×974839² = 1900622151842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (974837) 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, 13137 + ... + 13210.

It is an arithmetic number, because the mean of its divisors is an integer number (250306).

2⁹⁷⁴⁸³⁹ is an apocalyptic number.

974839 is a deficient number, since it is larger than the sum of its proper divisors (26385).

974839 is a wasteful number, since it uses less digits than its factorization.

974839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26384.

The product of its digits is 54432, while the sum is 40.

The square root of 974839 is about 987.3393540217. The cubic root of 974839 is about 99.1541658167.

The spelling of 974839 in words is "nine hundred seventy-four thousand, eight hundred thirty-nine".