394143467 has 4 divisors (see below), whose sum is σ = 414887880. Its totient is φ = 373399056.

The previous prime is 394143427. The next prime is 394143527. The reversal of 394143467 is 764341493.

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

It is a cyclic number.

It is not a de Polignac number, because 394143467 - 2¹² = 394139371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394143427) 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, 10372178 + ... + 10372215.

It is an arithmetic number, because the mean of its divisors is an integer number (103721970).

Almost surely, 2^394143467 is an apocalyptic number.

394143467 is a deficient number, since it is larger than the sum of its proper divisors (20744413).

394143467 is a wasteful number, since it uses less digits than its factorization.

394143467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20744412.

The product of its digits is 217728, while the sum is 41.

The square root of 394143467 is about 19853.0467938803. The cubic root of 394143467 is about 733.1926637666.

The spelling of 394143467 in words is "three hundred ninety-four million, one hundred forty-three thousand, four hundred sixty-seven".