469821 has 16 divisors (see below), whose sum is σ = 714240. Its totient is φ = 271920.

The previous prime is 469811. The next prime is 469823. The reversal of 469821 is 128964.

It is not a de Polignac number, because 469821 - 2⁶ = 469757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (469823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 450 + ... + 1068.

It is an arithmetic number, because the mean of its divisors is an integer number (44640).

2⁴⁶⁹⁸²¹ is an apocalyptic number.

It is an amenable number.

469821 is a deficient number, since it is larger than the sum of its proper divisors (244419).

469821 is a wasteful number, since it uses less digits than its factorization.

469821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656.

The product of its digits is 3456, while the sum is 30.

The square root of 469821 is about 685.4348984404. The cubic root of 469821 is about 77.7399293553.

The spelling of 469821 in words is "four hundred sixty-nine thousand, eight hundred twenty-one".