2440389 has 16 divisors (see below), whose sum is σ = 3768320. Its totient is φ = 1375920.

The previous prime is 2440387. The next prime is 2440391. The reversal of 2440389 is 9830442.

It is a happy number.

2440389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2440387) and next prime (2440391).

It is not a de Polignac number, because 2440389 - 2¹ = 2440387 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2440387) 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, 924 + ... + 2394.

It is an arithmetic number, because the mean of its divisors is an integer number (235520).

2^2440389 is an apocalyptic number.

It is an amenable number.

2440389 is a deficient number, since it is larger than the sum of its proper divisors (1327931).

2440389 is a wasteful number, since it uses less digits than its factorization.

2440389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 2440389 is about 1562.1744460847. The cubic root of 2440389 is about 134.6334638868.

It can be divided in two parts, 2 and 440389, that added together give a triangular number (440391 = T₉₃₈).

The spelling of 2440389 in words is "two million, four hundred forty thousand, three hundred eighty-nine".