394654381 has 8 divisors (see below), whose sum is σ = 432172224. Its totient is φ = 357409920.

The previous prime is 394654373. The next prime is 394654427. The reversal of 394654381 is 183456493.

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

It is a cyclic number.

It is not a de Polignac number, because 394654381 - 2³ = 394654373 is a prime.

It is a super-2 number, since 2×394654381² = 311504160884986322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394654361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65316 + ... + 71101.

It is an arithmetic number, because the mean of its divisors is an integer number (54021528).

Almost surely, 2^394654381 is an apocalyptic number.

It is an amenable number.

394654381 is a deficient number, since it is larger than the sum of its proper divisors (37517843).

394654381 is a wasteful number, since it uses less digits than its factorization.

394654381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136691.

The product of its digits is 311040, while the sum is 43.

The square root of 394654381 is about 19865.9100219446. The cubic root of 394654381 is about 733.5093307377.

The spelling of 394654381 in words is "three hundred ninety-four million, six hundred fifty-four thousand, three hundred eighty-one".