89399520 has 288 divisors, whose sum is σ = 357739200. Its totient is φ = 20321280.

The previous prime is 89399501. The next prime is 89399533. The reversal of 89399520 is 2599398.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 493830 + ... + 494010.

It is an arithmetic number, because the mean of its divisors is an integer number (1242150).

Almost surely, 2^89399520 is an apocalyptic number.

89399520 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 89399520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178869600).

89399520 is an abundant number, since it is smaller than the sum of its proper divisors (268339680).

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

89399520 is a wasteful number, since it uses less digits than its factorization.

89399520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 89399520 is about 9455.1319398515. The cubic root of 89399520 is about 447.1415854056.

The spelling of 89399520 in words is "eighty-nine million, three hundred ninety-nine thousand, five hundred twenty".