441479981 has 2 divisors, whose sum is σ = 441479982. Its totient is φ = 441479980.

The previous prime is 441479957. The next prime is 441480001. The reversal of 441479981 is 189974144.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 259499881 + 181980100 = 16109^2 + 13490^2 .

It is a cyclic number.

It is not a de Polignac number, because 441479981 - 2¹⁰ = 441478957 is a prime.

It is a super-2 number, since 2×441479981² = 389809147247520722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (441472981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220739990 + 220739991.

It is an arithmetic number, because the mean of its divisors is an integer number (220739991).

Almost surely, 2^441479981 is an apocalyptic number.

It is an amenable number.

441479981 is a deficient number, since it is larger than the sum of its proper divisors (1).

441479981 is an equidigital number, since it uses as much as digits as its factorization.

441479981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 47.

The square root of 441479981 is about 21011.4250111695. The cubic root of 441479981 is about 761.4423101397.

The spelling of 441479981 in words is "four hundred forty-one million, four hundred seventy-nine thousand, nine hundred eighty-one".