2585487979 has 2 divisors, whose sum is σ = 2585487980. Its totient is φ = 2585487978.

The previous prime is 2585487929. The next prime is 2585487997. The reversal of 2585487979 is 9797845852.

Together with next prime (2585487997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2585487979 - 2⁹ = 2585487467 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2585487979.

It is not a weakly prime, because it can be changed into another prime (2585487929) 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 as a sum of consecutive naturals, namely, 1292743989 + 1292743990.

It is an arithmetic number, because the mean of its divisors is an integer number (1292743990).

Almost surely, 2^2585487979 is an apocalyptic number.

2585487979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2585487979 is an equidigital number, since it uses as much as digits as its factorization.

2585487979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50803200, while the sum is 64.

The square root of 2585487979 is about 50847.6939398435. The cubic root of 2585487979 is about 1372.5057554755.

The spelling of 2585487979 in words is "two billion, five hundred eighty-five million, four hundred eighty-seven thousand, nine hundred seventy-nine".