445140041 has 2 divisors, whose sum is σ = 445140042. Its totient is φ = 445140040.

The previous prime is 445140029. The next prime is 445140043. The reversal of 445140041 is 140041544.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 436642816 + 8497225 = 20896^2 + 2915^2 .

It is a cyclic number.

It is not a de Polignac number, because 445140041 - 2¹⁸ = 444877897 is a prime.

It is a super-2 number, since 2×445140041² = 396299312202963362, which contains 22 as substring.

Together with 445140043, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 445139989 and 445140016.

It is not a weakly prime, because it can be changed into another prime (445140043) 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, 222570020 + 222570021.

It is an arithmetic number, because the mean of its divisors is an integer number (222570021).

Almost surely, 2^445140041 is an apocalyptic number.

It is an amenable number.

445140041 is a deficient number, since it is larger than the sum of its proper divisors (1).

445140041 is an equidigital number, since it uses as much as digits as its factorization.

445140041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 445140041 is about 21098.3421386610. The cubic root of 445140041 is about 763.5407504882.

Adding to 445140041 its reverse (140041544), we get a palindrome (585181585).

The spelling of 445140041 in words is "four hundred forty-five million, one hundred forty thousand, forty-one".