394698841 has 4 divisors (see below), whose sum is σ = 404325684. Its totient is φ = 385072000.

The previous prime is 394698833. The next prime is 394698847. The reversal of 394698841 is 148896493.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 148896493 = 607 ⋅245299.

It can be written as a sum of positive squares in 2 ways, for example, as 108243216 + 286455625 = 10404^2 + 16925^2 .

It is not a de Polignac number, because 394698841 - 2³ = 394698833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394698847) 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 in 3 ways as a sum of consecutive naturals, for example, 4813360 + ... + 4813441.

It is an arithmetic number, because the mean of its divisors is an integer number (101081421).

Almost surely, 2^394698841 is an apocalyptic number.

It is an amenable number.

394698841 is a deficient number, since it is larger than the sum of its proper divisors (9626843).

394698841 is an equidigital number, since it uses as much as digits as its factorization.

394698841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9626842.

The product of its digits is 1492992, while the sum is 52.

The square root of 394698841 is about 19867.0289927810. The cubic root of 394698841 is about 733.5368743318.

The spelling of 394698841 in words is "three hundred ninety-four million, six hundred ninety-eight thousand, eight hundred forty-one".