89971880 has 64 divisors (see below), whose sum is σ = 207360000. Its totient is φ = 35126784.

The previous prime is 89971879. The next prime is 89971907. The reversal of 89971880 is 8817998.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 452021 + ... + 452219.

It is an arithmetic number, because the mean of its divisors is an integer number (3240000).

Almost surely, 2^89971880 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 89971880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103680000).

89971880 is an abundant number, since it is smaller than the sum of its proper divisors (117388120).

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

89971880 is a wasteful number, since it uses less digits than its factorization.

89971880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 50.

The square root of 89971880 is about 9485.3508105921. The cubic root of 89971880 is about 448.0937967934.

The spelling of 89971880 in words is "eighty-nine million, nine hundred seventy-one thousand, eight hundred eighty".