394474841 has 2 divisors, whose sum is σ = 394474842. Its totient is φ = 394474840.

The previous prime is 394474837. The next prime is 394474891. The reversal of 394474841 is 148474493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 262569616 + 131905225 = 16204^2 + 11485^2 .

It is a cyclic number.

It is not a de Polignac number, because 394474841 - 2² = 394474837 is a prime.

It is a super-2 number, since 2×394474841² = 311220800363950562, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 394474792 and 394474801.

It is not a weakly prime, because it can be changed into another prime (394474811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197237420 + 197237421.

It is an arithmetic number, because the mean of its divisors is an integer number (197237421).

Almost surely, 2^394474841 is an apocalyptic number.

It is an amenable number.

394474841 is a deficient number, since it is larger than the sum of its proper divisors (1).

394474841 is an equidigital number, since it uses as much as digits as its factorization.

394474841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 44.

The square root of 394474841 is about 19861.3907116294. The cubic root of 394474841 is about 733.3980821387.

The spelling of 394474841 in words is "three hundred ninety-four million, four hundred seventy-four thousand, eight hundred forty-one".