394370378 has 8 divisors (see below), whose sum is σ = 597654372. Its totient is φ = 195152256.

The previous prime is 394370363. The next prime is 394370387. The reversal of 394370378 is 873073493.

It can be written as a sum of positive squares in 2 ways, for example, as 391367089 + 3003289 = 19783^2 + 1733^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1016225 + ... + 1016612.

Almost surely, 2^394370378 is an apocalyptic number.

394370378 is a deficient number, since it is larger than the sum of its proper divisors (203283994).

394370378 is a wasteful number, since it uses less digits than its factorization.

394370378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032936.

The product of its (nonzero) digits is 381024, while the sum is 44.

The square root of 394370378 is about 19858.7607367630. The cubic root of 394370378 is about 733.3333380624. Note that the first 5 decimals are identical.

The spelling of 394370378 in words is "three hundred ninety-four million, three hundred seventy thousand, three hundred seventy-eight".