89002578889 has 81 divisors (see below), whose sum is σ = 116036271477. Its totient is φ = 68048563968.

The previous prime is 89002578817. The next prime is 89002578893. The reversal of 89002578889 is 98887520098.

It is a happy number.

The square root of 89002578889 is 298333.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 20301975225 + 68700603664 = 142485^2 + 262108^2 .

It is not a de Polignac number, because 89002578889 - 2¹⁵ = 89002546121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89002578889.

It is not an unprimeable number, because it can be changed into a prime (89002578089) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 816537367 + ... + 816537475.

Almost surely, 2^89002578889 is an apocalyptic number.

89002578889 is the 298333-rd square number.

89002578889 is the 149167-th centered octagonal number.

It is an amenable number.

89002578889 is a deficient number, since it is larger than the sum of its proper divisors (27033692588).

89002578889 is a wasteful number, since it uses less digits than its factorization.

89002578889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 23224320, while the sum is 64.

Multiplying 89002578889 by its sum of digits (64), we get a square (5696165048896 = 2386664²).

The spelling of 89002578889 in words is "eighty-nine billion, two million, five hundred seventy-eight thousand, eight hundred eighty-nine".