394085971 has 4 divisors (see below), whose sum is σ = 394182472. Its totient is φ = 393989472.

The previous prime is 394085969. The next prime is 394085977. The reversal of 394085971 is 179580493.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 179580493 = 1307 ⋅137399.

It is a cyclic number.

It is not a de Polignac number, because 394085971 - 2¹ = 394085969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394085977) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 41841 + ... + 50386.

It is an arithmetic number, because the mean of its divisors is an integer number (98545618).

Almost surely, 2^394085971 is an apocalyptic number.

394085971 is a deficient number, since it is larger than the sum of its proper divisors (96501).

394085971 is an equidigital number, since it uses as much as digits as its factorization.

394085971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96500.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 394085971 is about 19851.5987013641. The cubic root of 394085971 is about 733.1570103401.

The spelling of 394085971 in words is "three hundred ninety-four million, eighty-five thousand, nine hundred seventy-one".