441640629 has 6 divisors (see below), whose sum is σ = 637925366. Its totient is φ = 294427080.

The previous prime is 441640627. The next prime is 441640651. The reversal of 441640629 is 926046144.

441640629 is a `hidden beast` number, since 4 + 4 + 1 + 640 + 6 + 2 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 441630225 + 10404 = 21015^2 + 102^2 .

It is not a de Polignac number, because 441640629 - 2¹ = 441640627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 441640593 and 441640602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (441640627) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24535582 + ... + 24535599.

Almost surely, 2^441640629 is an apocalyptic number.

It is an amenable number.

441640629 is a deficient number, since it is larger than the sum of its proper divisors (196284737).

441640629 is a wasteful number, since it uses less digits than its factorization.

441640629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49071187 (or 49071184 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 441640629 is about 21015.2475360154. The cubic root of 441640629 is about 761.5346581171.

The spelling of 441640629 in words is "four hundred forty-one million, six hundred forty thousand, six hundred twenty-nine".