394494819 has 8 divisors (see below), whose sum is σ = 526099200. Its totient is φ = 262943496.

The previous prime is 394494791. The next prime is 394494833. The reversal of 394494819 is 918494493.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 394494819 - 2⁵ = 394494787 is a prime.

It is a super-2 number, since 2×394494819² = 311252324435685522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (394494839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9834 + ... + 29760.

It is an arithmetic number, because the mean of its divisors is an integer number (65762400).

Almost surely, 2^394494819 is an apocalyptic number.

394494819 is a deficient number, since it is larger than the sum of its proper divisors (131604381).

394494819 is a wasteful number, since it uses less digits than its factorization.

394494819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26529.

The product of its digits is 1119744, while the sum is 51.

The square root of 394494819 is about 19861.8936408390. The cubic root of 394494819 is about 733.4104628012.

The spelling of 394494819 in words is "three hundred ninety-four million, four hundred ninety-four thousand, eight hundred nineteen".