394352089 has 4 divisors (see below), whose sum is σ = 411497856. Its totient is φ = 377206324.

The previous prime is 394352041. The next prime is 394352093. The reversal of 394352089 is 980253493.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 980253493 = 5641 ⋅173773.

It is a cyclic number.

It is not a de Polignac number, because 394352089 - 2⁹ = 394351577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394352099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8572849 + ... + 8572894.

It is an arithmetic number, because the mean of its divisors is an integer number (102874464).

Almost surely, 2^394352089 is an apocalyptic number.

It is an amenable number.

394352089 is a deficient number, since it is larger than the sum of its proper divisors (17145767).

394352089 is a wasteful number, since it uses less digits than its factorization.

394352089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17145766.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 394352089 is about 19858.3002545535. The cubic root of 394352089 is about 733.3220017303.

The spelling of 394352089 in words is "three hundred ninety-four million, three hundred fifty-two thousand, eighty-nine".