394143475 has 24 divisors (see below), whose sum is σ = 534497040. Its totient is φ = 285936000.

The previous prime is 394143427. The next prime is 394143527. The reversal of 394143475 is 574341493.

It is not a de Polignac number, because 394143475 - 2¹⁷ = 394012403 is a prime.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 125221 + ... + 128329.

It is an arithmetic number, because the mean of its divisors is an integer number (22270710).

Almost surely, 2^394143475 is an apocalyptic number.

394143475 is a deficient number, since it is larger than the sum of its proper divisors (140353565).

394143475 is a wasteful number, since it uses less digits than its factorization.

394143475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3591 (or 3586 counting only the distinct ones).

The product of its digits is 181440, while the sum is 40.

The square root of 394143475 is about 19853.0469953607. The cubic root of 394143475 is about 733.1926687272.

The spelling of 394143475 in words is "three hundred ninety-four million, one hundred forty-three thousand, four hundred seventy-five".