89378840 has 16 divisors (see below), whose sum is σ = 201102480. Its totient is φ = 35751520.

The previous prime is 89378837. The next prime is 89378857. The reversal of 89378840 is 4887398.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1117196 + ... + 1117275.

It is an arithmetic number, because the mean of its divisors is an integer number (12568905).

Almost surely, 2^89378840 is an apocalyptic number.

It is an amenable number.

89378840 is an abundant number, since it is smaller than the sum of its proper divisors (111723640).

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

89378840 is a wasteful number, since it uses less digits than its factorization.

89378840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234482 (or 2234478 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 89378840 is about 9454.0382905931. The cubic root of 89378840 is about 447.1071049778.

The spelling of 89378840 in words is "eighty-nine million, three hundred seventy-eight thousand, eight hundred forty".