394548340 has 24 divisors (see below), whose sum is σ = 842597280. Its totient is φ = 155143968.

The previous prime is 394548331. The next prime is 394548383. The reversal of 394548340 is 43845493.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 394548293 and 394548302.

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 7 ways as a sum of consecutive naturals, for example, 166002 + ... + 168361.

It is an arithmetic number, because the mean of its divisors is an integer number (35108220).

Almost surely, 2^394548340 is an apocalyptic number.

It is an amenable number.

394548340 is an abundant number, since it is smaller than the sum of its proper divisors (448048940).

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

394548340 is a wasteful number, since it uses less digits than its factorization.

394548340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334431 (or 334429 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 394548340 is about 19863.2409238775. The cubic root of 394548340 is about 733.4436284977.

The spelling of 394548340 in words is "three hundred ninety-four million, five hundred forty-eight thousand, three hundred forty".