394981349 has 8 divisors (see below), whose sum is σ = 477960768. Its totient is φ = 318640320.

The previous prime is 394981339. The next prime is 394981351. The reversal of 394981349 is 943189493.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-394981349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 394981297 and 394981306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394981309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1659467 + ... + 1659704.

It is an arithmetic number, because the mean of its divisors is an integer number (59745096).

Almost surely, 2^394981349 is an apocalyptic number.

It is an amenable number.

394981349 is a deficient number, since it is larger than the sum of its proper divisors (82979419).

394981349 is a wasteful number, since it uses less digits than its factorization.

394981349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3319195.

The product of its digits is 839808, while the sum is 50.

The square root of 394981349 is about 19874.1376919855. The cubic root of 394981349 is about 733.7118436936.

The spelling of 394981349 in words is "three hundred ninety-four million, nine hundred eighty-one thousand, three hundred forty-nine".