394857377 has 4 divisors (see below), whose sum is σ = 405529236. Its totient is φ = 384185520.

The previous prime is 394857371. The next prime is 394857413. The reversal of 394857377 is 773758493.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 275261281 + 119596096 = 16591^2 + 10936^2 .

It is a cyclic number.

It is not a de Polignac number, because 394857377 - 2¹⁸ = 394595233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394857371) 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, 5335874 + ... + 5335947.

It is an arithmetic number, because the mean of its divisors is an integer number (101382309).

Almost surely, 2^394857377 is an apocalyptic number.

394857377 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

394857377 is a deficient number, since it is larger than the sum of its proper divisors (10671859).

394857377 is a wasteful number, since it uses less digits than its factorization.

394857377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10671858.

The product of its digits is 4445280, while the sum is 53.

The square root of 394857377 is about 19871.0185194418. The cubic root of 394857377 is about 733.6350727751.

The spelling of 394857377 in words is "three hundred ninety-four million, eight hundred fifty-seven thousand, three hundred seventy-seven".