394430797 has 4 divisors (see below), whose sum is σ = 394821180. Its totient is φ = 394040416.

The previous prime is 394430791. The next prime is 394430833. The reversal of 394430797 is 797034493.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91183401 + 303247396 = 9549^2 + 17414^2 .

It is a cyclic number.

It is not a de Polignac number, because 394430797 - 2³ = 394430789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394430791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193672 + ... + 195697.

It is an arithmetic number, because the mean of its divisors is an integer number (98705295).

Almost surely, 2^394430797 is an apocalyptic number.

It is an amenable number.

394430797 is a deficient number, since it is larger than the sum of its proper divisors (390383).

394430797 is a wasteful number, since it uses less digits than its factorization.

394430797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390382.

The product of its (nonzero) digits is 571536, while the sum is 46.

The square root of 394430797 is about 19860.2818962874. The cubic root of 394430797 is about 733.3707859430.

The spelling of 394430797 in words is "three hundred ninety-four million, four hundred thirty thousand, seven hundred ninety-seven".