441977381 has 2 divisors, whose sum is σ = 441977382. Its totient is φ = 441977380.

The previous prime is 441977377. The next prime is 441977401. The reversal of 441977381 is 183779144.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 287845156 + 154132225 = 16966^2 + 12415^2 .

It is a cyclic number.

It is not a de Polignac number, because 441977381 - 2² = 441977377 is a prime.

It is a super-2 number, since 2×441977381² = 390688010631238322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (441977311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220988690 + 220988691.

It is an arithmetic number, because the mean of its divisors is an integer number (220988691).

Almost surely, 2^441977381 is an apocalyptic number.

It is an amenable number.

441977381 is a deficient number, since it is larger than the sum of its proper divisors (1).

441977381 is an equidigital number, since it uses as much as digits as its factorization.

441977381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 44.

The square root of 441977381 is about 21023.2580966890. The cubic root of 441977381 is about 761.7281662541.

The spelling of 441977381 in words is "four hundred forty-one million, nine hundred seventy-seven thousand, three hundred eighty-one".