89394963840 has 768 divisors, whose sum is σ = 393096412800. Its totient is φ = 18207866880.

The previous prime is 89394963817. The next prime is 89394963851. The reversal of 89394963840 is 4836949398.

89394963840 is a `hidden beast` number, since 89 + 3 + 94 + 96 + 384 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15197700 + ... + 15203580.

Almost surely, 2^89394963840 is an apocalyptic number.

89394963840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89394963840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196548206400).

89394963840 is an abundant number, since it is smaller than the sum of its proper divisors (303701448960).

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

89394963840 is a wasteful number, since it uses less digits than its factorization.

89394963840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5955 (or 5940 counting only the distinct ones).

The product of its (nonzero) digits is 40310784, while the sum is 63.

The spelling of 89394963840 in words is "eighty-nine billion, three hundred ninety-four million, nine hundred sixty-three thousand, eight hundred forty".