2478589 has 2 divisors, whose sum is σ = 2478590. Its totient is φ = 2478588.

The previous prime is 2478587. The next prime is 2478611. The reversal of 2478589 is 9858742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2464900 + 13689 = 1570^2 + 117^2 .

It is a cyclic number.

It is not a de Polignac number, because 2478589 - 2¹ = 2478587 is a prime.

It is a super-2 number, since 2×2478589² = 12286806861842, which contains 22 as substring.

Together with 2478587, it forms a pair of twin primes.

It is a d-powerful number, because it can be written as 2¹⁹ + 4³ + 7 + 8³ + 5⁹ + 8³ + 9² .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2478587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1239294 + 1239295.

It is an arithmetic number, because the mean of its divisors is an integer number (1239295).

2^2478589 is an apocalyptic number.

It is an amenable number.

2478589 is a deficient number, since it is larger than the sum of its proper divisors (1).

2478589 is an equidigital number, since it uses as much as digits as its factorization.

2478589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 43.

The square root of 2478589 is about 1574.3535181147. The cubic root of 2478589 is about 135.3323134567.

It can be divided in two parts, 247 and 8589, that added together give a square (8836 = 94²).

The spelling of 2478589 in words is "two million, four hundred seventy-eight thousand, five hundred eighty-nine".