8617889 has 4 divisors (see below), whose sum is σ = 9849024. Its totient is φ = 7386756.

The previous prime is 8617877. The next prime is 8617927. The reversal of 8617889 is 9887168.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8617889 - 2¹⁶ = 8552353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8614889) 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 3 ways as a sum of consecutive naturals, for example, 615557 + ... + 615570.

It is an arithmetic number, because the mean of its divisors is an integer number (2462256).

Almost surely, 2^8617889 is an apocalyptic number.

It is an amenable number.

8617889 is a deficient number, since it is larger than the sum of its proper divisors (1231135).

8617889 is a wasteful number, since it uses less digits than its factorization.

8617889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231134.

The product of its digits is 193536, while the sum is 47.

The square root of 8617889 is about 2935.6241244410. The cubic root of 8617889 is about 205.0219211141.

The spelling of 8617889 in words is "eight million, six hundred seventeen thousand, eight hundred eighty-nine".