457409 has 4 divisors (see below), whose sum is σ = 464304. Its totient is φ = 450516.

The previous prime is 457403. The next prime is 457411. The reversal of 457409 is 904754.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 904754 = 2 ⋅452377.

It is a cyclic number.

It is not a de Polignac number, because 457409 - 2⁴ = 457393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (457403) 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 3 ways as a sum of consecutive naturals, for example, 3347 + ... + 3480.

It is an arithmetic number, because the mean of its divisors is an integer number (116076).

2⁴⁵⁷⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

457409 is a deficient number, since it is larger than the sum of its proper divisors (6895).

457409 is an equidigital number, since it uses as much as digits as its factorization.

457409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6894.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 457409 is about 676.3201904424. The cubic root of 457409 is about 77.0492179853.

The spelling of 457409 in words is "four hundred fifty-seven thousand, four hundred nine".