2489745 has 8 divisors (see below), whose sum is σ = 3983616. Its totient is φ = 1327856.

The previous prime is 2489719. The next prime is 2489749. The reversal of 2489745 is 5479842.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2489745 - 2⁵ = 2489713 is a prime.

It is a d-powerful number, because it can be written as 2 + 4⁵ + 8 + 9⁶ + 7² + 4⁶ + 5⁹ .

It is not an unprimeable number, because it can be changed into a prime (2489749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82977 + ... + 83006.

It is an arithmetic number, because the mean of its divisors is an integer number (497952).

2^2489745 is an apocalyptic number.

It is an amenable number.

2489745 is a deficient number, since it is larger than the sum of its proper divisors (1493871).

2489745 is a wasteful number, since it uses less digits than its factorization.

2489745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165991.

The product of its digits is 80640, while the sum is 39.

The square root of 2489745 is about 1577.8925818952. The cubic root of 2489745 is about 135.5350508217.

It can be divided in two parts, 24897 and 45, that added together give a palindrome (24942).

The spelling of 2489745 in words is "two million, four hundred eighty-nine thousand, seven hundred forty-five".