2489985 has 12 divisors (see below), whose sum is σ = 4316052. Its totient is φ = 1327968.

The previous prime is 2489947. The next prime is 2489999. The reversal of 2489985 is 5899842.

It can be written as a sum of positive squares in 2 ways, for example, as 651249 + 1838736 = 807^2 + 1356^2 .

It is not a de Polignac number, because 2489985 - 2⁷ = 2489857 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 55333 = 2489985 / (2 + 4 + 8 + 9 + 9 + 8 + 5).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2489985.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27622 + ... + 27711.

It is an arithmetic number, because the mean of its divisors is an integer number (359671).

2^2489985 is an apocalyptic number.

It is an amenable number.

2489985 is a deficient number, since it is larger than the sum of its proper divisors (1826067).

2489985 is a wasteful number, since it uses less digits than its factorization.

2489985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55344 (or 55341 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 2489985 is about 1577.9686308669. The cubic root of 2489985 is about 135.5394056676.

It can be divided in two parts, 24 and 89985, that added together give a palindrome (90009).

The spelling of 2489985 in words is "two million, four hundred eighty-nine thousand, nine hundred eighty-five".