441666629 has 2 divisors, whose sum is σ = 441666630. Its totient is φ = 441666628.

The previous prime is 441666623. The next prime is 441666671. The reversal of 441666629 is 926666144.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 371140225 + 70526404 = 19265^2 + 8398^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-441666629 is a prime.

It is a super-2 number, since 2×441666629² = 390138822344447282, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 441666629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (441666623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220833314 + 220833315.

It is an arithmetic number, because the mean of its divisors is an integer number (220833315).

Almost surely, 2^441666629 is an apocalyptic number.

It is an amenable number.

441666629 is a deficient number, since it is larger than the sum of its proper divisors (1).

441666629 is an equidigital number, since it uses as much as digits as its factorization.

441666629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 44.

The square root of 441666629 is about 21015.8661253825. The cubic root of 441666629 is about 761.5496020265.

The spelling of 441666629 in words is "four hundred forty-one million, six hundred sixty-six thousand, six hundred twenty-nine".