394856941 has 2 divisors, whose sum is σ = 394856942. Its totient is φ = 394856940.

The previous prime is 394856923. The next prime is 394856947. The reversal of 394856941 is 149658493.

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., 391208841 + 3648100 = 19779^2 + 1910^2 .

It is a cyclic number.

It is not a de Polignac number, because 394856941 - 2²⁵ = 361302509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394856947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197428470 + 197428471.

It is an arithmetic number, because the mean of its divisors is an integer number (197428471).

Almost surely, 2^394856941 is an apocalyptic number.

It is an amenable number.

394856941 is a deficient number, since it is larger than the sum of its proper divisors (1).

394856941 is an equidigital number, since it uses as much as digits as its factorization.

394856941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 49.

The square root of 394856941 is about 19871.0075486876. The cubic root of 394856941 is about 733.6348027494.

The spelling of 394856941 in words is "three hundred ninety-four million, eight hundred fifty-six thousand, nine hundred forty-one".