20089599 has 8 divisors (see below), whose sum is σ = 26947200. Its totient is φ = 13312536.

The previous prime is 20089591. The next prime is 20089609. The reversal of 20089599 is 99598002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20089599 - 2³ = 20089591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20089599.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20089591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19549 + ... + 20550.

It is an arithmetic number, because the mean of its divisors is an integer number (3368400).

Almost surely, 2^20089599 is an apocalyptic number.

20089599 is a deficient number, since it is larger than the sum of its proper divisors (6857601).

20089599 is a wasteful number, since it uses less digits than its factorization.

20089599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40269.

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 20089599 is about 4482.1422333523. The cubic root of 20089599 is about 271.8465063546.

The spelling of 20089599 in words is "twenty million, eighty-nine thousand, five hundred ninety-nine".