89989380 has 120 divisors (see below), whose sum is σ = 304086552. Its totient is φ = 22146048.

The previous prime is 89989379. The next prime is 89989387. The reversal of 89989380 is 8398998.

It can be written as a sum of positive squares in 4 ways, for example, as 5184 + 89984196 = 72^2 + 9486^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (89989387) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 18924 + ... + 23196.

Almost surely, 2^89989380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89989380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152043276).

89989380 is an abundant number, since it is smaller than the sum of its proper divisors (214097172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89989380 is a wasteful number, since it uses less digits than its factorization.

89989380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4307 (or 4296 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The square root of 89989380 is about 9486.2732408465. The cubic root of 89989380 is about 448.1228471037.

The spelling of 89989380 in words is "eighty-nine million, nine hundred eighty-nine thousand, three hundred eighty".