394105541 has 2 divisors, whose sum is σ = 394105542. Its totient is φ = 394105540.

The previous prime is 394105531. The next prime is 394105559. The reversal of 394105541 is 145501493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 254274916 + 139830625 = 15946^2 + 11825^2 .

It is a cyclic number.

It is not a de Polignac number, because 394105541 - 2¹⁸ = 393843397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 394105498 and 394105507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394105531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197052770 + 197052771.

It is an arithmetic number, because the mean of its divisors is an integer number (197052771).

Almost surely, 2^394105541 is an apocalyptic number.

It is an amenable number.

394105541 is a deficient number, since it is larger than the sum of its proper divisors (1).

394105541 is an equidigital number, since it uses as much as digits as its factorization.

394105541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 394105541 is about 19852.0916026498. The cubic root of 394105541 is about 733.1691461398.

The spelling of 394105541 in words is "three hundred ninety-four million, one hundred five thousand, five hundred forty-one".