409451 has 8 divisors (see below), whose sum is σ = 484320. Its totient is φ = 338688.

The previous prime is 409441. The next prime is 409463. The reversal of 409451 is 154904.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 409451 - 2¹⁰ = 408427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (409441) 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 7 ways as a sum of consecutive naturals, for example, 806 + ... + 1211.

It is an arithmetic number, because the mean of its divisors is an integer number (60540).

2⁴⁰⁹⁴⁵¹ is an apocalyptic number.

409451 is a deficient number, since it is larger than the sum of its proper divisors (74869).

409451 is a wasteful number, since it uses less digits than its factorization.

409451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 409451 is about 639.8835831618. The cubic root of 409451 is about 74.2564150798.

The spelling of 409451 in words is "four hundred nine thousand, four hundred fifty-one".