469009821 has 48 divisors (see below), whose sum is σ = 783535680. Its totient is φ = 247887360.

The previous prime is 469009789. The next prime is 469009823. The reversal of 469009821 is 128900964.

It is not a de Polignac number, because 469009821 - 2⁵ = 469009789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 469009821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (469009823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 145851 + ... + 149031.

It is an arithmetic number, because the mean of its divisors is an integer number (16323660).

Almost surely, 2^469009821 is an apocalyptic number.

It is an amenable number.

469009821 is a deficient number, since it is larger than the sum of its proper divisors (314525859).

469009821 is a wasteful number, since it uses less digits than its factorization.

469009821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3274 (or 3267 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 469009821 is about 21656.6345723430. The cubic root of 469009821 is about 776.9516242912.

The spelling of 469009821 in words is "four hundred sixty-nine million, nine thousand, eight hundred twenty-one".