389024081 has 8 divisors (see below), whose sum is σ = 401797800. Its totient is φ = 376451712.

The previous prime is 389024059. The next prime is 389024089. The reversal of 389024081 is 180420983.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 76300225 + 312723856 = 8735^2 + 17684^2 .

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-389024081 is a prime.

It is a super-2 number, since 2×389024081² = 302679471195789122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389024089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46406 + ... + 54143.

It is an arithmetic number, because the mean of its divisors is an integer number (50224725).

Almost surely, 2^389024081 is an apocalyptic number.

It is an amenable number.

389024081 is a deficient number, since it is larger than the sum of its proper divisors (12773719).

389024081 is a wasteful number, since it uses less digits than its factorization.

389024081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100675.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 389024081 is about 19723.6933914518. The cubic root of 389024081 is about 730.0044291969.

The spelling of 389024081 in words is "three hundred eighty-nine million, twenty-four thousand, eighty-one".