2478489 has 16 divisors (see below), whose sum is σ = 3599232. Its totient is φ = 1507968.

The previous prime is 2478479. The next prime is 2478517. The reversal of 2478489 is 9848742.

2478489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2478489 - 2⁴ = 2478473 is a prime.

It is a super-2 number, since 2×2478489² = 12285815446242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2478489.

It is not an unprimeable number, because it can be changed into a prime (2478449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3709 + ... + 4325.

It is an arithmetic number, because the mean of its divisors is an integer number (224952).

2^2478489 is an apocalyptic number.

It is an amenable number.

2478489 is a deficient number, since it is larger than the sum of its proper divisors (1120743).

2478489 is a wasteful number, since it uses less digits than its factorization.

2478489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736.

The product of its digits is 129024, while the sum is 42.

The square root of 2478489 is about 1574.3217587266. The cubic root of 2478489 is about 135.3304934141.

The spelling of 2478489 in words is "two million, four hundred seventy-eight thousand, four hundred eighty-nine".