408449 has 4 divisors (see below), whose sum is σ = 410436. Its totient is φ = 406464.

The previous prime is 408437. The next prime is 408461. The reversal of 408449 is 944804.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (408437) and next prime (408461).

It can be written as a sum of positive squares in 2 ways, for example, as 40000 + 368449 = 200^2 + 607^2 .

It is a cyclic number.

It is not a de Polignac number, because 408449 - 2⁴ = 408433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 408449.

It is not an unprimeable number, because it can be changed into a prime (408469) 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, 644 + ... + 1109.

It is an arithmetic number, because the mean of its divisors is an integer number (102609).

2⁴⁰⁸⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

408449 is a deficient number, since it is larger than the sum of its proper divisors (1987).

408449 is a wasteful number, since it uses less digits than its factorization.

408449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 408449 is about 639.1001486465. The cubic root of 408449 is about 74.1957926817.

The spelling of 408449 in words is "four hundred eight thousand, four hundred forty-nine".