889698989 has 4 divisors (see below), whose sum is σ = 890597760. Its totient is φ = 888800220.

The previous prime is 889698983. The next prime is 889698991. The reversal of 889698989 is 989896988.

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 889698989 - 2¹⁶ = 889633453 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 (889698983) 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 3 ways as a sum of consecutive naturals, for example, 447899 + ... + 449880.

It is an arithmetic number, because the mean of its divisors is an integer number (222649440).

Almost surely, 2^889698989 is an apocalyptic number.

It is an amenable number.

889698989 is a deficient number, since it is larger than the sum of its proper divisors (898771).

889698989 is an equidigital number, since it uses as much as digits as its factorization.

889698989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898770.

The product of its digits is 161243136, while the sum is 74.

The square root of 889698989 is about 29827.8223978889. The cubic root of 889698989 is about 961.7917164837.

The spelling of 889698989 in words is "eight hundred eighty-nine million, six hundred ninety-eight thousand, nine hundred eighty-nine".