457909 has 4 divisors (see below), whose sum is σ = 462220. Its totient is φ = 453600.

The previous prime is 457903. The next prime is 457913. The reversal of 457909 is 909754.

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 152100 + 305809 = 390^2 + 553^2 .

It is a cyclic number.

It is not a de Polignac number, because 457909 - 2⁹ = 457397 is a prime.

It is a Duffinian number.

457909 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (457903) 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 3 ways as a sum of consecutive naturals, for example, 1992 + ... + 2209.

It is an arithmetic number, because the mean of its divisors is an integer number (115555).

2⁴⁵⁷⁹⁰⁹ is an apocalyptic number.

It is an amenable number.

457909 is a deficient number, since it is larger than the sum of its proper divisors (4311).

457909 is a wasteful number, since it uses less digits than its factorization.

457909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4310.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 457909 is about 676.6897368809. The cubic root of 457909 is about 77.0772822780.

The spelling of 457909 in words is "four hundred fifty-seven thousand, nine hundred nine".