2440549 has 4 divisors (see below), whose sum is σ = 2480620. Its totient is φ = 2400480.

The previous prime is 2440541. The next prime is 2440561. The reversal of 2440549 is 9450442.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9450442 = 2 ⋅4725221.

It can be written as a sum of positive squares in 2 ways, for example, as 1404225 + 1036324 = 1185^2 + 1018^2 .

It is a cyclic number.

It is not a de Polignac number, because 2440549 - 2³ = 2440541 is a prime.

It is a Duffinian number.

2440549 is a modest number, since divided by 549 gives 244 as remainder.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2440541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19944 + ... + 20065.

It is an arithmetic number, because the mean of its divisors is an integer number (620155).

2^2440549 is an apocalyptic number.

It is an amenable number.

2440549 is a deficient number, since it is larger than the sum of its proper divisors (40071).

2440549 is an equidigital number, since it uses as much as digits as its factorization.

2440549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40070.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 2440549 is about 1562.2256559153. The cubic root of 2440549 is about 134.6364061614.

The spelling of 2440549 in words is "two million, four hundred forty thousand, five hundred forty-nine".