469744821 has 36 divisors (see below), whose sum is σ = 850024812. Its totient is φ = 247774464.

The previous prime is 469744819. The next prime is 469744841. The reversal of 469744821 is 128447964.

It can be written as a sum of positive squares in 2 ways, for example, as 221682321 + 248062500 = 14889^2 + 15750^2 .

It is not a de Polignac number, because 469744821 - 2¹ = 469744819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (469744811) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 35236 + ... + 46701.

Almost surely, 2^469744821 is an apocalyptic number.

It is an amenable number.

469744821 is a deficient number, since it is larger than the sum of its proper divisors (380279991).

469744821 is a wasteful number, since it uses less digits than its factorization.

469744821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81970 (or 81960 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 469744821 is about 21673.5973248559. The cubic root of 469744821 is about 777.3572742153.

The spelling of 469744821 in words is "four hundred sixty-nine million, seven hundred forty-four thousand, eight hundred twenty-one".