394895849 has 2 divisors, whose sum is σ = 394895850. Its totient is φ = 394895848.

The previous prime is 394895843. The next prime is 394895869. The reversal of 394895849 is 948598493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 347561449 + 47334400 = 18643^2 + 6880^2 .

It is an emirp because it is prime and its reverse (948598493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 394895849 - 2⁸ = 394895593 is a prime.

It is not a weakly prime, because it can be changed into another prime (394895843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197447924 + 197447925.

It is an arithmetic number, because the mean of its divisors is an integer number (197447925).

Almost surely, 2^394895849 is an apocalyptic number.

It is an amenable number.

394895849 is a deficient number, since it is larger than the sum of its proper divisors (1).

394895849 is an equidigital number, since it uses as much as digits as its factorization.

394895849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11197440, while the sum is 59.

The square root of 394895849 is about 19871.9865388441. The cubic root of 394895849 is about 733.6588986707.

The spelling of 394895849 in words is "three hundred ninety-four million, eight hundred ninety-five thousand, eight hundred forty-nine".