394852919 has 4 divisors (see below), whose sum is σ = 404483520. Its totient is φ = 385222320.

The previous prime is 394852907. The next prime is 394852933. The reversal of 394852919 is 919258493.

It is a happy number.

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 394852919 - 2²⁰ = 393804343 is a prime.

It is a super-2 number, since 2×394852919² = 311817655285641122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394852219) 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, 4815239 + ... + 4815320.

It is an arithmetic number, because the mean of its divisors is an integer number (101120880).

Almost surely, 2^394852919 is an apocalyptic number.

394852919 is a deficient number, since it is larger than the sum of its proper divisors (9630601).

394852919 is an equidigital number, since it uses as much as digits as its factorization.

394852919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9630600.

The product of its digits is 699840, while the sum is 50.

The square root of 394852919 is about 19870.9063457106. The cubic root of 394852919 is about 733.6323118141.

The spelling of 394852919 in words is "three hundred ninety-four million, eight hundred fifty-two thousand, nine hundred nineteen".