2440539 has 12 divisors (see below), whose sum is σ = 3539536. Its totient is φ = 1620432.

The previous prime is 2440523. The next prime is 2440541. The reversal of 2440539 is 9350442.

It is not a de Polignac number, because 2440539 - 2⁴ = 2440523 is a prime.

It is a super-2 number, since 2×2440539² = 11912461221042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2440579) 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 11 ways as a sum of consecutive naturals, for example, 2994 + ... + 3720.

2^2440539 is an apocalyptic number.

2440539 is a deficient number, since it is larger than the sum of its proper divisors (1098997).

2440539 is a wasteful number, since it uses less digits than its factorization.

2440539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106 (or 1103 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 2440539 is about 1562.2224553501. Note that the first 3 decimals coincide. The cubic root of 2440539 is about 134.6362222730.

Subtracting 2440539 from its reverse (9350442), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 2440539 in words is "two million, four hundred forty thousand, five hundred thirty-nine".