978595249 has 2 divisors, whose sum is σ = 978595250. Its totient is φ = 978595248.

The previous prime is 978595223. The next prime is 978595253. The reversal of 978595249 is 942595879.

978595249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 972504225 + 6091024 = 31185^2 + 2468^2 .

It is an emirp because it is prime and its reverse (942595879) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 978595249 - 2¹¹ = 978593201 is a prime.

It is a super-2 number, since 2×978595249² = 1915297322730744002, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 978595193 and 978595202.

It is not a weakly prime, because it can be changed into another prime (978595279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489297624 + 489297625.

It is an arithmetic number, because the mean of its divisors is an integer number (489297625).

Almost surely, 2^978595249 is an apocalyptic number.

It is an amenable number.

978595249 is a deficient number, since it is larger than the sum of its proper divisors (1).

978595249 is an equidigital number, since it uses as much as digits as its factorization.

978595249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8164800, while the sum is 58.

The square root of 978595249 is about 31282.5070766395. The cubic root of 978595249 is about 992.8135618206.

The spelling of 978595249 in words is "nine hundred seventy-eight million, five hundred ninety-five thousand, two hundred forty-nine".