389403493 has 8 divisors (see below), whose sum is σ = 406112000. Its totient is φ = 372954240.

The previous prime is 389403491. The next prime is 389403517. The reversal of 389403493 is 394304983.

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 389403493 - 2¹ = 389403491 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389403491) 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, 61743 + ... + 67756.

It is an arithmetic number, because the mean of its divisors is an integer number (50764000).

Almost surely, 2^389403493 is an apocalyptic number.

It is an amenable number.

389403493 is a deficient number, since it is larger than the sum of its proper divisors (16708507).

389403493 is a wasteful number, since it uses less digits than its factorization.

389403493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129627.

The product of its (nonzero) digits is 279936, while the sum is 43.

The square root of 389403493 is about 19733.3092257736. The cubic root of 389403493 is about 730.2416745327.

The spelling of 389403493 in words is "three hundred eighty-nine million, four hundred three thousand, four hundred ninety-three".