394961093 has 2 divisors, whose sum is σ = 394961094. Its totient is φ = 394961092.

The previous prime is 394961087. The next prime is 394961107. The reversal of 394961093 is 390169493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 394936129 + 24964 = 19873^2 + 158^2 .

It is a cyclic number.

It is not a de Polignac number, because 394961093 - 2⁶ = 394961029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394961003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197480546 + 197480547.

It is an arithmetic number, because the mean of its divisors is an integer number (197480547).

Almost surely, 2^394961093 is an apocalyptic number.

It is an amenable number.

394961093 is a deficient number, since it is larger than the sum of its proper divisors (1).

394961093 is an equidigital number, since it uses as much as digits as its factorization.

394961093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157464, while the sum is 44.

The square root of 394961093 is about 19873.6280784360. The cubic root of 394961093 is about 733.6993010582.

The spelling of 394961093 in words is "three hundred ninety-four million, nine hundred sixty-one thousand, ninety-three".