89889920 has 32 divisors (see below), whose sum is σ = 214894620. Its totient is φ = 35955712.

The previous prime is 89889901. The next prime is 89889923. The reversal of 89889920 is 2998898.

It can be written as a sum of positive squares in 2 ways, for example, as 89567296 + 322624 = 9464^2 + 568^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (89889923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69587 + ... + 70866.

Almost surely, 2^89889920 is an apocalyptic number.

89889920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

89889920 is an abundant number, since it is smaller than the sum of its proper divisors (125004700).

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

89889920 is a wasteful number, since it uses less digits than its factorization.

89889920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140472 (or 140460 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 53.

The square root of 89889920 is about 9481.0294799668. The cubic root of 89889920 is about 447.9576915828.

It can be divided in two parts, 89889 and 920, that added together give a palindrome (90809).

The spelling of 89889920 in words is "eighty-nine million, eight hundred eighty-nine thousand, nine hundred twenty".