394656494 has 16 divisors (see below), whose sum is σ = 632092032. Its totient is φ = 184358328.

The previous prime is 394656491. The next prime is 394656499. The reversal of 394656494 is 494656493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394656491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97784 + ... + 101739.

It is an arithmetic number, because the mean of its divisors is an integer number (39505752).

Almost surely, 2^394656494 is an apocalyptic number.

394656494 is a deficient number, since it is larger than the sum of its proper divisors (237435538).

394656494 is a wasteful number, since it uses less digits than its factorization.

394656494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199591.

The product of its digits is 2799360, while the sum is 50.

The square root of 394656494 is about 19865.9632034291. The cubic root of 394656494 is about 733.5106398176.

Subtracting 394656494 from its reverse (494656493), we obtain a palindrome (99999999).

The spelling of 394656494 in words is "three hundred ninety-four million, six hundred fifty-six thousand, four hundred ninety-four".