394984786 has 24 divisors (see below), whose sum is σ = 698927616. Its totient is φ = 166892040.

The previous prime is 394984771. The next prime is 394984789. The reversal of 394984786 is 687489493.

It is a self number, because there is not a number n which added to its sum of digits gives 394984786.

It is not an unprimeable number, because it can be changed into a prime (394984789) 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 11 ways as a sum of consecutive naturals, for example, 21426 + ... + 35341.

It is an arithmetic number, because the mean of its divisors is an integer number (29121984).

Almost surely, 2^394984786 is an apocalyptic number.

394984786 is a deficient number, since it is larger than the sum of its proper divisors (303942830).

394984786 is a wasteful number, since it uses less digits than its factorization.

394984786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56854 (or 56847 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 58.

The square root of 394984786 is about 19874.2241609578. The cubic root of 394984786 is about 733.7139718618.

The spelling of 394984786 in words is "three hundred ninety-four million, nine hundred eighty-four thousand, seven hundred eighty-six".