978853 has 2 divisors, whose sum is σ = 978854. Its totient is φ = 978852.

The previous prime is 978851. The next prime is 978863. The reversal of 978853 is 358879.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 667489 + 311364 = 817^2 + 558^2 .

It is an emirp because it is prime and its reverse (358879) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 978853 - 2¹ = 978851 is a prime.

Together with 978851, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (978851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489426 + 489427.

It is an arithmetic number, because the mean of its divisors is an integer number (489427).

2⁹⁷⁸⁸⁵³ is an apocalyptic number.

It is an amenable number.

978853 is a deficient number, since it is larger than the sum of its proper divisors (1).

978853 is an equidigital number, since it uses as much as digits as its factorization.

978853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The square root of 978853 is about 989.3700015667. The cubic root of 978853 is about 99.2900719484.

The spelling of 978853 in words is "nine hundred seventy-eight thousand, eight hundred fifty-three".