978935 has 4 divisors (see below), whose sum is σ = 1174728. Its totient is φ = 783144.

The previous prime is 978931. The next prime is 978947. The reversal of 978935 is 539879.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 539879 = 23 ⋅23473.

It is a cyclic number.

It is not a de Polignac number, because 978935 - 2² = 978931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 978892 and 978901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978931) 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, 97889 + ... + 97898.

It is an arithmetic number, because the mean of its divisors is an integer number (293682).

2⁹⁷⁸⁹³⁵ is an apocalyptic number.

978935 is a deficient number, since it is larger than the sum of its proper divisors (195793).

978935 is a wasteful number, since it uses less digits than its factorization.

978935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195792.

The product of its digits is 68040, while the sum is 41.

The square root of 978935 is about 989.4114412114. The cubic root of 978935 is about 99.2928444309.

The spelling of 978935 in words is "nine hundred seventy-eight thousand, nine hundred thirty-five".