441211681 has 2 divisors, whose sum is σ = 441211682. Its totient is φ = 441211680.

The previous prime is 441211669. The next prime is 441211699. The reversal of 441211681 is 186112144.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 434347281 + 6864400 = 20841^2 + 2620^2 .

It is a cyclic number.

It is not a de Polignac number, because 441211681 - 2¹³ = 441203489 is a prime.

It is a super-2 number, since 2×441211681² = 389335494901691522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (441211601) 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, 220605840 + 220605841.

It is an arithmetic number, because the mean of its divisors is an integer number (220605841).

Almost surely, 2^441211681 is an apocalyptic number.

It is an amenable number.

441211681 is a deficient number, since it is larger than the sum of its proper divisors (1).

441211681 is an equidigital number, since it uses as much as digits as its factorization.

441211681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1536, while the sum is 28.

The square root of 441211681 is about 21005.0394191489. The cubic root of 441211681 is about 761.2880287983.

The spelling of 441211681 in words is "four hundred forty-one million, two hundred eleven thousand, six hundred eighty-one".