394010394 has 16 divisors (see below), whose sum is σ = 834375168. Its totient is φ = 123611072.

The previous prime is 394010389. The next prime is 394010399. The reversal of 394010394 is 493010493.

It is an interprime number because it is at equal distance from previous prime (394010389) and next prime (394010399).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (394010399) 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 in 7 ways as a sum of consecutive naturals, for example, 1931322 + ... + 1931525.

It is an arithmetic number, because the mean of its divisors is an integer number (52148448).

Almost surely, 2^394010394 is an apocalyptic number.

394010394 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

394010394 is an abundant number, since it is smaller than the sum of its proper divisors (440364774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

394010394 is a wasteful number, since it uses less digits than its factorization.

394010394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3862869.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 394010394 is about 19849.6950606300. The cubic root of 394010394 is about 733.1101395606.

Subtracting 394010394 from its reverse (493010493), we obtain a palindrome (99000099).

The spelling of 394010394 in words is "three hundred ninety-four million, ten thousand, three hundred ninety-four".