394343494 has 16 divisors (see below), whose sum is σ = 609821856. Its totient is φ = 191131200.

The previous prime is 394343483. The next prime is 394343501. The reversal of 394343494 is 494343493.

It is a self number, because there is not a number n which added to its sum of digits gives 394343494.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2442 + ... + 28189.

It is an arithmetic number, because the mean of its divisors is an integer number (38113866).

Almost surely, 2^394343494 is an apocalyptic number.

394343494 is a deficient number, since it is larger than the sum of its proper divisors (215478362).

394343494 is a wasteful number, since it uses less digits than its factorization.

394343494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30831.

The product of its digits is 559872, while the sum is 43.

The square root of 394343494 is about 19858.0838451246. The cubic root of 394343494 is about 733.3166740476.

Subtracting 394343494 from its reverse (494343493), we obtain a palindrome (99999999).

The spelling of 394343494 in words is "three hundred ninety-four million, three hundred forty-three thousand, four hundred ninety-four".