460821 has 4 divisors (see below), whose sum is σ = 614432. Its totient is φ = 307212.

The previous prime is 460813. The next prime is 460829. The reversal of 460821 is 128064.

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.

It is an interprime number because it is at equal distance from previous prime (460813) and next prime (460829).

It is not a de Polignac number, because 460821 - 2³ = 460813 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (460829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76801 + ... + 76806.

It is an arithmetic number, because the mean of its divisors is an integer number (153608).

2⁴⁶⁰⁸²¹ is an apocalyptic number.

It is an amenable number.

460821 is a deficient number, since it is larger than the sum of its proper divisors (153611).

460821 is a wasteful number, since it uses less digits than its factorization.

460821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153610.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 460821 is about 678.8379777237. The cubic root of 460821 is about 77.2403240884.

Adding to 460821 its reverse (128064), we get a palindrome (588885).

The spelling of 460821 in words is "four hundred sixty thousand, eight hundred twenty-one".