394499142 has 24 divisors (see below), whose sum is σ = 855836280. Its totient is φ = 131332320.

The previous prime is 394499129. The next prime is 394499173. The reversal of 394499142 is 241994493.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1017 + ... + 28107.

It is an arithmetic number, because the mean of its divisors is an integer number (35659845).

Almost surely, 2^394499142 is an apocalyptic number.

394499142 is an abundant number, since it is smaller than the sum of its proper divisors (461337138).

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

394499142 is a wasteful number, since it uses less digits than its factorization.

394499142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27908 (or 27905 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 394499142 is about 19862.0024670223. The cubic root of 394499142 is about 733.4131417733.

The spelling of 394499142 in words is "three hundred ninety-four million, four hundred ninety-nine thousand, one hundred forty-two".