394005055 has 8 divisors (see below), whose sum is σ = 475938144. Its totient is φ = 313116000.

The previous prime is 394005041. The next prime is 394005083. The reversal of 394005055 is 550500493.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 394005055 - 2⁵ = 394005023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 260176 + ... + 261685.

It is an arithmetic number, because the mean of its divisors is an integer number (59492268).

Almost surely, 2^394005055 is an apocalyptic number.

394005055 is a deficient number, since it is larger than the sum of its proper divisors (81933089).

394005055 is a wasteful number, since it uses less digits than its factorization.

394005055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522017.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 394005055 is about 19849.5605744812. The cubic root of 394005055 is about 733.1068282328.

The spelling of 394005055 in words is "three hundred ninety-four million, five thousand, fifty-five".