394529387 has 8 divisors (see below), whose sum is σ = 477413856. Its totient is φ = 318275712.

The previous prime is 394529383. The next prime is 394529393. The reversal of 394529387 is 783925493.

It is a happy number.

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 394529387 - 2² = 394529383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (394529381) by changing a digit.

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, 1657568 + ... + 1657805.

It is an arithmetic number, because the mean of its divisors is an integer number (59676732).

Almost surely, 2^394529387 is an apocalyptic number.

394529387 is a deficient number, since it is larger than the sum of its proper divisors (82884469).

394529387 is a wasteful number, since it uses less digits than its factorization.

394529387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3315397.

The product of its digits is 1632960, while the sum is 50.

The square root of 394529387 is about 19862.7638308469. The cubic root of 394529387 is about 733.4318841154.

The spelling of 394529387 in words is "three hundred ninety-four million, five hundred twenty-nine thousand, three hundred eighty-seven".