8857389 has 8 divisors (see below), whose sum is σ = 11823840. Its totient is φ = 5897936.

The previous prime is 8857379. The next prime is 8857399. The reversal of 8857389 is 9837588.

It is a happy number.

8857389 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8857379) and next prime (8857399).

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 8857389 - 2⁸ = 8857133 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8857379) 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, 3247 + ... + 5315.

It is an arithmetic number, because the mean of its divisors is an integer number (1477980).

Almost surely, 2^8857389 is an apocalyptic number.

It is an amenable number.

8857389 is a deficient number, since it is larger than the sum of its proper divisors (2966451).

8857389 is a wasteful number, since it uses less digits than its factorization.

8857389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3499.

The product of its digits is 483840, while the sum is 48.

The square root of 8857389 is about 2976.1365896074. The cubic root of 8857389 is about 206.9038504197.

The spelling of 8857389 in words is "eight million, eight hundred fifty-seven thousand, three hundred eighty-nine".