89020989 has 6 divisors (see below), whose sum is σ = 128585886. Its totient is φ = 59347320.

The previous prime is 89020969. The next prime is 89020991. The reversal of 89020989 is 98902098.

It can be written as a sum of positive squares in only one way, i.e., 89019225 + 1764 = 9435^2 + 42^2 .

It is not a de Polignac number, because 89020989 - 2⁷ = 89020861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89020969) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4945602 + ... + 4945619.

It is an arithmetic number, because the mean of its divisors is an integer number (21430981).

Almost surely, 2^89020989 is an apocalyptic number.

It is an amenable number.

89020989 is a deficient number, since it is larger than the sum of its proper divisors (39564897).

89020989 is a wasteful number, since it uses less digits than its factorization.

89020989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9891227 (or 9891224 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 89020989 is about 9435.0934812539. The cubic root of 89020989 is about 446.5096043784.

It can be divided in two parts, 89020 and 989, that added together give a palindrome (90009).

The spelling of 89020989 in words is "eighty-nine million, twenty thousand, nine hundred eighty-nine".