394718941 has 4 divisors (see below), whose sum is σ = 394958812. Its totient is φ = 394479072.

The previous prime is 394718917. The next prime is 394718953. The reversal of 394718941 is 149817493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 149817493 = 7 ⋅21402499.

It can be written as a sum of positive squares in 2 ways, for example, as 143496441 + 251222500 = 11979^2 + 15850^2 .

It is a cyclic number.

It is not a de Polignac number, because 394718941 - 2⁷ = 394718813 is a prime.

It is a super-2 number, since 2×394718941² = 311606084768322962, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 394718891 and 394718900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394718911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117450 + ... + 120763.

It is an arithmetic number, because the mean of its divisors is an integer number (98739703).

Almost surely, 2^394718941 is an apocalyptic number.

It is an amenable number.

394718941 is a deficient number, since it is larger than the sum of its proper divisors (239871).

394718941 is a wasteful number, since it uses less digits than its factorization.

394718941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239870.

The product of its digits is 217728, while the sum is 46.

The square root of 394718941 is about 19867.5348495982. The cubic root of 394718941 is about 733.5493258850.

The spelling of 394718941 in words is "three hundred ninety-four million, seven hundred eighteen thousand, nine hundred forty-one".