5978809 has 2 divisors, whose sum is σ = 5978810. Its totient is φ = 5978808.

The previous prime is 5978803. The next prime is 5978813. The reversal of 5978809 is 9088795.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5978025 + 784 = 2445^2 + 28^2 .

It is a cyclic number.

It is not a de Polignac number, because 5978809 - 2³ = 5978801 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5978801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2989404 + 2989405.

It is an arithmetic number, because the mean of its divisors is an integer number (2989405).

Almost surely, 2^5978809 is an apocalyptic number.

It is an amenable number.

5978809 is a deficient number, since it is larger than the sum of its proper divisors (1).

5978809 is an equidigital number, since it uses as much as digits as its factorization.

5978809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 46.

The square root of 5978809 is about 2445.1603219421. The cubic root of 5978809 is about 181.4978813687.

The spelling of 5978809 in words is "five million, nine hundred seventy-eight thousand, eight hundred nine".