89280981 has 32 divisors (see below), whose sum is σ = 141056000. Its totient is φ = 55648944.

The previous prime is 89280979. The next prime is 89281001. The reversal of 89280981 is 18908298.

It is not a de Polignac number, because 89280981 - 2¹ = 89280979 is a prime.

It is a super-2 number, since 2×89280981² = 15942187136644722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89280901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39426 + ... + 41628.

It is an arithmetic number, because the mean of its divisors is an integer number (4408000).

Almost surely, 2^89280981 is an apocalyptic number.

It is an amenable number.

89280981 is a deficient number, since it is larger than the sum of its proper divisors (51775019).

89280981 is a wasteful number, since it uses less digits than its factorization.

89280981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2310 (or 2304 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The square root of 89280981 is about 9448.8613599735. The cubic root of 89280981 is about 446.9438693538.

The spelling of 89280981 in words is "eighty-nine million, two hundred eighty thousand, nine hundred eighty-one".