89423840 has 144 divisors (see below), whose sum is σ = 241315200. Its totient is φ = 31257600.

The previous prime is 89423837. The next prime is 89423863. The reversal of 89423840 is 4832498.

It is a junction number, because it is equal to n+sod(n) for n = 89423794 and 89423803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 600086 + ... + 600234.

It is an arithmetic number, because the mean of its divisors is an integer number (1675800).

Almost surely, 2^89423840 is an apocalyptic number.

89423840 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 89423840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120657600).

89423840 is an abundant number, since it is smaller than the sum of its proper divisors (151891360).

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

89423840 is a wasteful number, since it uses less digits than its factorization.

89423840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 89423840 is about 9456.4179264667. The cubic root of 89423840 is about 447.1821281192.

The spelling of 89423840 in words is "eighty-nine million, four hundred twenty-three thousand, eight hundred forty".