978259 has 4 divisors (see below), whose sum is σ = 1020816. Its totient is φ = 935704.

The previous prime is 978239. The next prime is 978269. The reversal of 978259 is 952879.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 952879 = 223 ⋅4273.

It is a cyclic number.

It is not a de Polignac number, because 978259 - 2⁹ = 977747 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (978209) 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 3 ways as a sum of consecutive naturals, for example, 21244 + ... + 21289.

It is an arithmetic number, because the mean of its divisors is an integer number (255204).

2⁹⁷⁸²⁵⁹ is an apocalyptic number.

978259 is a deficient number, since it is larger than the sum of its proper divisors (42557).

978259 is a wasteful number, since it uses less digits than its factorization.

978259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42556.

The product of its digits is 45360, while the sum is 40.

The square root of 978259 is about 989.0697649812. The cubic root of 978259 is about 99.2699837306.

The spelling of 978259 in words is "nine hundred seventy-eight thousand, two hundred fifty-nine".