441004661 has 4 divisors (see below), whose sum is σ = 441480300. Its totient is φ = 440529024.

The previous prime is 441004631. The next prime is 441004699. The reversal of 441004661 is 166400144.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33570436 + 407434225 = 5794^2 + 20185^2 .

It is a cyclic number.

It is not a de Polignac number, because 441004661 - 2¹⁸ = 440742517 is a prime.

It is a super-2 number, since 2×441004661² = 388970222047449842, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 441004661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (441004631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236426 + ... + 238283.

It is an arithmetic number, because the mean of its divisors is an integer number (110370075).

Almost surely, 2^441004661 is an apocalyptic number.

It is an amenable number.

441004661 is a deficient number, since it is larger than the sum of its proper divisors (475639).

441004661 is an equidigital number, since it uses as much as digits as its factorization.

441004661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475638.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 441004661 is about 21000.1109758972. The cubic root of 441004661 is about 761.1689427222.

The spelling of 441004661 in words is "four hundred forty-one million, four thousand, six hundred sixty-one".