2405449 has 4 divisors (see below), whose sum is σ = 2546964. Its totient is φ = 2263936.

The previous prime is 2405443. The next prime is 2405461. The reversal of 2405449 is 9445042.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2229049 + 176400 = 1493^2 + 420^2 .

It is a cyclic number.

It is not a de Polignac number, because 2405449 - 2³ = 2405441 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2405441) 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, 70732 + ... + 70765.

It is an arithmetic number, because the mean of its divisors is an integer number (636741).

2^2405449 is an apocalyptic number.

It is an amenable number.

2405449 is a deficient number, since it is larger than the sum of its proper divisors (141515).

2405449 is a wasteful number, since it uses less digits than its factorization.

2405449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141514.

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

The square root of 2405449 is about 1550.9509985812. The cubic root of 2405449 is about 133.9878395440.

The spelling of 2405449 in words is "two million, four hundred five thousand, four hundred forty-nine".