89786989 has 4 divisors (see below), whose sum is σ = 94512640. Its totient is φ = 85061340.

The previous prime is 89786981. The next prime is 89787011. The reversal of 89786989 is 98968798.

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 89786989 - 2³ = 89786981 is a prime.

It is a super-2 number, since 2×89786989² = 16123406787372242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89786989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89786981) 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, 2362797 + ... + 2362834.

It is an arithmetic number, because the mean of its divisors is an integer number (23628160).

Almost surely, 2^89786989 is an apocalyptic number.

It is an amenable number.

89786989 is a deficient number, since it is larger than the sum of its proper divisors (4725651).

89786989 is a wasteful number, since it uses less digits than its factorization.

89786989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4725650.

The product of its digits is 15676416, while the sum is 64.

The square root of 89786989 is about 9475.5996644012. The cubic root of 89786989 is about 447.7866440626.

The spelling of 89786989 in words is "eighty-nine million, seven hundred eighty-six thousand, nine hundred eighty-nine".