89378940 has 192 divisors, whose sum is σ = 301593600. Its totient is φ = 19756800.

The previous prime is 89378881. The next prime is 89378951. The reversal of 89378940 is 4987398.

It is a self number, because there is not a number n which added to its sum of digits gives 89378940.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 884890 + ... + 884990.

It is an arithmetic number, because the mean of its divisors is an integer number (1570800).

Almost surely, 2^89378940 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 89378940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150796800).

89378940 is an abundant number, since it is smaller than the sum of its proper divisors (212214660).

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

89378940 is a wasteful number, since it uses less digits than its factorization.

89378940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 89378940 is about 9454.0435793368. The cubic root of 89378940 is about 447.1072717238.

The spelling of 89378940 in words is "eighty-nine million, three hundred seventy-eight thousand, nine hundred forty".