389868997 has 8 divisors (see below), whose sum is σ = 445828736. Its totient is φ = 333975312.

The previous prime is 389868979. The next prime is 389869019. The reversal of 389868997 is 799868983.

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 389868997 - 2¹⁵ = 389836229 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 (389868907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3138 + ... + 28099.

It is an arithmetic number, because the mean of its divisors is an integer number (55728592).

Almost surely, 2^389868997 is an apocalyptic number.

It is an amenable number.

389868997 is a deficient number, since it is larger than the sum of its proper divisors (55959739).

389868997 is a wasteful number, since it uses less digits than its factorization.

389868997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33027.

The product of its digits is 47029248, while the sum is 67.

The square root of 389868997 is about 19745.1005821697. The cubic root of 389868997 is about 730.5325425418.

The spelling of 389868997 in words is "three hundred eighty-nine million, eight hundred sixty-eight thousand, nine hundred ninety-seven".