394787994 has 16 divisors (see below), whose sum is σ = 789773760. Its totient is φ = 131563040.

The previous prime is 394787993. The next prime is 394788001. The reversal of 394787994 is 499787493.

It is a happy number.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (394787993) 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, 35902 + ... + 45590.

It is an arithmetic number, because the mean of its divisors is an integer number (49360860).

Almost surely, 2^394787994 is an apocalyptic number.

394787994 is an abundant number, since it is smaller than the sum of its proper divisors (394985766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

394787994 is a wasteful number, since it uses less digits than its factorization.

394787994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16485.

The product of its digits is 13716864, while the sum is 60.

The square root of 394787994 is about 19869.2726087293. The cubic root of 394787994 is about 733.5920996352.

The spelling of 394787994 in words is "three hundred ninety-four million, seven hundred eighty-seven thousand, nine hundred ninety-four".