89878789 has 48 divisors (see below), whose sum is σ = 125024256. Its totient is φ = 63504000.

The previous prime is 89878783. The next prime is 89878807. The reversal of 89878789 is 98787898.

89878789 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 89878789 - 2⁵ = 89878757 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 89878789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89878783) 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 47 ways as a sum of consecutive naturals, for example, 707644 + ... + 707770.

It is an arithmetic number, because the mean of its divisors is an integer number (2604672).

Almost surely, 2^89878789 is an apocalyptic number.

It is an amenable number.

89878789 is a deficient number, since it is larger than the sum of its proper divisors (35145467).

89878789 is a wasteful number, since it uses less digits than its factorization.

89878789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 259 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 64.

The square root of 89878789 is about 9480.4424474810. The cubic root of 89878789 is about 447.9392007335.

It can be divided in two parts, 89 and 878789, that added together give a palindrome (878878).

The spelling of 89878789 in words is "eighty-nine million, eight hundred seventy-eight thousand, seven hundred eighty-nine".