2549409 has 16 divisors (see below), whose sum is σ = 3563520. Its totient is φ = 1619280.

The previous prime is 2549387. The next prime is 2549423. The reversal of 2549409 is 9049452.

2549409 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 2549409 - 2¹¹ = 2547361 is a prime.

2549409 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2549409.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2549429) 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, 7174 + ... + 7520.

It is an arithmetic number, because the mean of its divisors is an integer number (222720).

2^2549409 is an apocalyptic number.

It is an amenable number.

2549409 is a deficient number, since it is larger than the sum of its proper divisors (1014111).

2549409 is a wasteful number, since it uses less digits than its factorization.

2549409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 2549409 is about 1596.6868822659. The cubic root of 2549409 is about 136.6091654461.

The spelling of 2549409 in words is "two million, five hundred forty-nine thousand, four hundred nine".