89683840 has 64 divisors (see below), whose sum is σ = 227039760. Its totient is φ = 33759232.

The previous prime is 89683807. The next prime is 89683861. The reversal of 89683840 is 4838698.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6759 + ... + 15001.

Almost surely, 2^89683840 is an apocalyptic number.

89683840 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 89683840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113519880).

89683840 is an abundant number, since it is smaller than the sum of its proper divisors (137355920).

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

89683840 is a wasteful number, since it uses less digits than its factorization.

89683840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8279 (or 8267 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 46.

The square root of 89683840 is about 9470.1552257606. The cubic root of 89683840 is about 447.6151030860.

It can be divided in two parts, 89 and 683840, that added together give a square (683929 = 827²).

The spelling of 89683840 in words is "eighty-nine million, six hundred eighty-three thousand, eight hundred forty".