89465840 has 40 divisors (see below), whose sum is σ = 208446480. Its totient is φ = 35710976.

The previous prime is 89465819. The next prime is 89465881. The reversal of 89465840 is 4856498.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 89465791 and 89465800.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 51872 + ... + 53568.

It is an arithmetic number, because the mean of its divisors is an integer number (5211162).

Almost surely, 2^89465840 is an apocalyptic number.

89465840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

89465840 is an abundant number, since it is smaller than the sum of its proper divisors (118980640).

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

89465840 is a wasteful number, since it uses less digits than its factorization.

89465840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2369 (or 2363 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 89465840 is about 9458.6383798092. The cubic root of 89465840 is about 447.2521270134.

The spelling of 89465840 in words is "eighty-nine million, four hundred sixty-five thousand, eight hundred forty".