394299378 has 48 divisors (see below), whose sum is σ = 954731232. Its totient is φ = 116568000.

The previous prime is 394299317. The next prime is 394299397. The reversal of 394299378 is 873992493.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16168 + ... + 32403.

It is an arithmetic number, because the mean of its divisors is an integer number (19890234).

Almost surely, 2^394299378 is an apocalyptic number.

394299378 is an abundant number, since it is smaller than the sum of its proper divisors (560431854).

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

394299378 is a wasteful number, since it uses less digits than its factorization.

394299378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48631 (or 48628 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 394299378 is about 19856.9730321618. The cubic root of 394299378 is about 733.2893271573.

The spelling of 394299378 in words is "three hundred ninety-four million, two hundred ninety-nine thousand, three hundred seventy-eight".